Merge b471f2179a into 3c1b4e752d

This commit fixes a very minor typo in the `java` (English) tutorial.

ar-ar/html-ar.html.markdown

@@ -1,7 +1,7 @@
 ---
 language: HTML
 lang: ar-ar
-filename: learnhtml-tf.html
+filename: learnhtml-tf.txt
 contributors:
     - ["Christophe THOMAS", "https://github.com/WinChris"]
 translators:

ca-es/html-ca.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HTML
-filename: html-ca.md
+filename: html-ca.txt
 contributors:
     - ["Christophe THOMAS", "https://github.com/WinChris"]
 translators:

de-de/hq9+-de.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HQ9+
-filename: hq9+-de.html
+filename: hq9+-de.txt
 contributors:
     - ["Alexey Nazaroff", "https://github.com/rogaven"]
 translators:

de-de/html-de.html.markdown

@@ -4,7 +4,7 @@ contributors:
     - ["Christophe THOMAS", "https://github.com/WinChris"]
 translators:
     - ["Dennis Keller", "https://github.com/denniskeller"]
-filename: learnhtml-de.html
+filename: learnhtml-de.txt
 lang: de-de
 ---
 

de-de/processing-de.html.markdown

@@ -6,7 +6,6 @@ contributors:
     - ["Divay Prakash", "https://github.com/divayprakash"]
 translators:
   - ["caminsha", "https://github.com/caminsha"]
-filename: processing-de.md
 lang: de-de
 ---
 

de-de/shutit-de.html.markdown

@@ -1,6 +1,6 @@
 ---
 category: framework
-filename: learnshutit-de.html
+filename: learnshutit-de.py
 framework: ShutIt
 contributors:
     - ["Ian Miell", "http://ian.meirionconsulting.tk"]

el-gr/css-gr.html.markdown

@@ -2,7 +2,7 @@
 language: CSS
 contributors:
     - ["Kostas Bariotis", "http://kostasbariotis.com"]
-filename: css-gr.html.markdown
+filename: css-gr.css
 lang: el-gr
 ---
 

el-gr/html-gr.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HTML
-filename: learnhtml-gr.html
+filename: learnhtml-gr.txt
 contributors:
     - ["Dimitri Kokkonis", "https://github.com/kokkonisd"]
 lang: el-gr

el-gr/json-gr.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: JSON
-filename: json-gr.html.markdown
+filename: json-gr.json
 contributors:
   - ["Anna Harren", "https://github.com/iirelu"]
   - ["Marco Scannadinari", "https://github.com/marcoms"]

es-es/dart-es.html.markdown

@@ -4,7 +4,7 @@ contributors:
     - ["Joao Pedrosa", "https://github.com/jpedrosa/"]
 translators:
     - ["Jorge Antonio Atempa", "http://www.twitter.com/atempa09"]
-filename: dart-es.md
+filename: dart-es.dart
 lang: es-es
 ---
 

es-es/groovy-es.html.markdown

@@ -5,7 +5,7 @@ contributors:
 translators:
     - ["Jhoon Saravia", "https://github.com/jhoon"]
 lang: es-es
-filename: groovy-es.html
+filename: groovy-es.groovy
 ---
 
 Groovy - Un lenguaje dinámico para la plataforma Java. [Leer más aquí](http://www.groovy-lang.org/).

es-es/haskell-es.html.markdown

@@ -4,7 +4,7 @@ contributors:
     - ["Adit Bhargava", "http://adit.io"]
 translators:
     - ["Jorge Antonio Atempa", "http://www.twitter.com/atempa09"]
-filename: haskell-es.md
+filename: haskell-es.hs
 lang: es-es
 ---
 

es-es/hq9+-es.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HQ9+
-filename: hq9+-es.html
+filename: hq9+-es.txt
 contributors:
     - ["Alexey Nazaroff", "https://github.com/rogaven"]
 translators:

es-es/html-es.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HTML
-filename: learnhtml-es.html
+filename: learnhtml-es.txt
 contributors:
     - ["Christophe THOMAS", "https://github.com/WinChris"]
 translators:

es-es/wolfram-es.html.markdown

@@ -3,7 +3,7 @@ language: Wolfram
 lang: es-es
 contributors:
     - ["Daniel Caballero", "http://github.com/danielcaballero796/"]
-filename: learnwolfram-es.md
+filename: learnwolfram-es.nb
 ---
 
 Wolfram es un lenguaje subyacente originalmente utilizado en Mathematica, pero ahora esta disponible para su uso en múltiples contextos.

fr-fr/html-fr.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HTML
-filename: learnhtml-fr.html
+filename: learnhtml-fr.txt
 contributors:
     - ["Christophe THOMAS", "https://github.com/WinChris"]
 lang: fr-fr

he-he/html-he.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HTML
-filename: learnhtml-he.html
+filename: learnhtml-he.txt
 contributors:
     - ['Christophe THOMAS', 'https://github.com/WinChris']
 translators:

hq9+.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HQ9+
-filename: hq9+.html
+filename: hq9+.txt
 contributors:
     - ["Alexey Nazaroff", "https://github.com/rogaven"]
 ---

id-id/hq9+-id.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HQ9+
-filename: hq9+-id.html
+filename: hq9+-id.txt
 contributors:
     - ["Alexey Nazaroff", "https://github.com/rogaven"]
 translators:

id-id/rst-id.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: reStructuredText (RST)
-filename: rst-id.html
+filename: rst-id.rst
 contributors:
     - ["DamienVGN", "https://github.com/martin-damien"]
     - ["Andre Polykanine", "https://github.com/Oire"]

it-it/rust-it.html.markdown

@@ -3,7 +3,7 @@ language: Rust
 contributors:
     - ["Carlo Milanesi", "http://github.com/carlomilanesi"]
 lang: it-it
-filename: rust-it.html.markdown
+filename: rust-it.rs
 ---
 
 Rust è un linguaggio di programmazione sviluppato da Mozilla Research.

java.html.markdown

@@ -225,7 +225,7 @@ public class LearnJava {
         String fooString = "My String Is Here!";
 
         // Text blocks
-        vat textBlock = """
+        var textBlock = """
                         This is a <Text Block> in Java 
                         """;
 

nl-nl/html-nl.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HTML
-filename: learnhtml-nl.html
+filename: learnhtml-nl.txt
 contributors:
     - ["Christophe THOMAS", "https://github.com/WinChris"]
 translators:

ro-ro/bf-ro.html.markdown

@@ -5,7 +5,7 @@ contributors:
     - ["Mathias Bynens", "http://mathiasbynens.be/"]
 translators:
     - ["Petru Dimitriu", "http://petru-dimitriu.github.io"]
-filename: bf-ro.html
+filename: bf-ro.bf
 lang: ro-ro
 ---
 

ro-ro/haskell-ro.html.markdown

@@ -5,7 +5,7 @@ contributors:
 translators:
     - ["Petru Dimitriu", "http://petru-dimitriu.github.io"]
 lang: ro-ro
-filename: haskell-ro.html
+filename: haskell-ro.hs
 ---
 
 Haskell este un limbaj de programare practic, pur funcțional.

ru-ru/html-ru.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HTML
-filename: learnhtml-ru.html
+filename: learnhtml-ru.txt
 contributors:
     - ["Christophe THOMAS", "https://github.com/WinChris"]
 translators:

ruby.html.markdown

@@ -91,7 +91,7 @@ false.class #=> FalseClass
 2 <= 2 #=> true
 2 >= 2 #=> true
 
-# Combined comparison operator (returns `1` when the first argument is greater, 
+# Combined comparison operator (returns `1` when the first argument is greater,
 # `-1` when the second argument is greater, and `0` otherwise)
 1 <=> 10 #=> -1 (1 < 10)
 10 <=> 1 #=> 1 (10 > 1)
@@ -259,8 +259,8 @@ else
   'else, also optional'
 end
 
-# If a condition controls invocation of a single statement rather than a block of code
-# you can use postfix-if notation
+# If a condition controls invocation of a single statement rather than a block
+# of code you can use postfix-if notation
 warnings = ['Patronimic is missing', 'Address too short']
 puts("Some warnings occurred:\n" + warnings.join("\n"))  if !warnings.empty?
 
@@ -268,7 +268,7 @@ puts("Some warnings occurred:\n" + warnings.join("\n"))  if !warnings.empty?
 puts("Some warnings occurred:\n" + warnings.join("\n"))  unless warnings.empty?
 
 # Loops
-# In Ruby, traditional `for` loops aren't very common. Instead, these 
+# In Ruby, traditional `for` loops aren't very common. Instead, these
 # basic loops are implemented using enumerable, which hinges on `each`.
 (1..5).each do |counter|
   puts "iteration #{counter}"
@@ -279,9 +279,10 @@ for counter in 1..5
   puts "iteration #{counter}"
 end
 
-# The `do |variable| ... end` construct above is called a 'block'. Blocks are similar
-# to lambdas, anonymous functions or closures in other programming languages. They can
-# be passed around as objects, called, or attached as methods.
+# The `do |variable| ... end` construct above is called a 'block'. Blocks are
+# similar to lambdas, anonymous functions or closures in other programming
+# languages. They can be passed around as objects, called, or attached as
+# methods.
 #
 # The 'each' method of a range runs the block once for each element of the range.
 # The block is passed a counter as a parameter.
@@ -415,19 +416,20 @@ surround { puts 'hello world' }
 #=> hello world
 #=> }
 
-# Blocks can be converted into a 'proc' object, which wraps the block 
-# and allows it to be passed to another method, bound to a different scope,
-# or manipulated otherwise. This is most common in method parameter lists,
-# where you frequently see a trailing '&block' parameter that will accept 
-# the block, if one is given, and convert it to a 'Proc'. The naming here is
-# convention; it would work just as well with '&pineapple'.
+# Blocks can be converted into a 'proc' object, which wraps the block and allows
+# it to be passed to another method, bound to a different scope, or manipulated
+# otherwise. This is most common in method parameter lists, where you frequently
+# see a trailing '&block' parameter that will accept the block, if one is given,
+# and convert it to a 'Proc'. The naming here is convention; it would work just
+# as well with '&pineapple'.
 def guests(&block)
   block.class #=> Proc
   block.call(4)
 end
 
-# The 'call' method on the Proc is similar to calling 'yield' when a block is 
-# present. The arguments passed to 'call' will be forwarded to the block as arguments.
+# The 'call' method on the Proc is similar to calling 'yield' when a block is
+# present. The arguments passed to 'call' will be forwarded to the block as
+# arguments.
 
 guests { |n| "You have #{n} guests." }
 # => "You have 4 guests."
@@ -443,7 +445,7 @@ end
 upcased = ['Watch', 'these', 'words', 'get', 'upcased'].map(&:upcase)
 puts upcased
 #=> ["WATCH", "THESE", "WORDS", "GET", "UPCASED"]
- 
+
 sum = [1, 2, 3, 4, 5].reduce(&:+)
 puts sum
 #=> 15
@@ -472,7 +474,7 @@ def best(first, second, third, *others)
   puts "There were #{others.count} other participants."
 end
 
-best *ranked_competitors 
+best *ranked_competitors
 #=> Winners are John, Sally, and Dingus.
 #=> There were 2 other participants.
 
@@ -480,9 +482,9 @@ best *ranked_competitors
 5.even? #=> false
 5.odd? #=> true
 
-# By convention, if a method name ends with an exclamation mark, it does something destructive
-# like mutate the receiver. Many methods have a ! version to make a change, and
-# a non-! version to just return a new changed version.
+# By convention, if a method name ends with an exclamation mark, it does
+# something destructive like mutate the receiver. Many methods have a ! version
+# to make a change, and a non-! version to just return a new changed version.
 company_name = "Dunder Mifflin"
 company_name.upcase #=> "DUNDER MIFFLIN"
 company_name #=> "Dunder Mifflin"
@@ -516,7 +518,8 @@ class Human
     @name
   end
 
-  # The above functionality can be encapsulated using the attr_accessor method as follows.
+  # The above functionality can be encapsulated using the attr_accessor method
+  # as follows.
   attr_accessor :name
 
   # Getter/setter methods can also be created individually like this.

shutit.html.markdown

@@ -3,7 +3,7 @@ category: framework
 framework: ShutIt
 contributors:
     - ["Ian Miell", "http://ian.meirionconsulting.tk"]
-filename: learnshutit.html
+filename: learnshutit.py
 ---
 
 ## ShutIt

spark.html.markdown

@@ -0,0 +1,106 @@
+---
+language: Spark
+category: tool
+tool: Spark
+filename: learnspark-en.spark
+contributors:
+    - ["Scronge", "https://github.com/Scronge"]
+---
+
+[Spark](https://spark.apache.org/) is an open-source distributed data processing framework that enables large-scale data processing across clusters. This guide covers the basics of **Apache Spark** using PySpark, the Python API.
+
+```python
+# Setting Up Spark
+from pyspark.sql import SparkSession
+
+spark = SparkSession.builder \
+    .appName("RealWorldExampleApp") \
+    .getOrCreate()
+
+# Working with Larger DataFrames
+# Sample data for a retail dataset with multiple columns for complex queries
+data = [
+    ("Alice", "Electronics", 30, 200),
+    ("Bob", "Clothing", 40, 150),
+    ("Carol", "Electronics", 25, 300),
+    ("Dave", "Home Goods", 35, 100),
+    ("Eve", "Clothing", 28, 80),
+    ("Frank", "Home Goods", 40, 120)
+]
+columns = ["Name", "Category", "Age", "PurchaseAmount"]
+
+df = spark.createDataFrame(data, columns)
+df.show()
+# +-----+-----------+---+--------------+
+# | Name|   Category|Age|PurchaseAmount|
+# +-----+-----------+---+--------------+
+# |Alice|Electronics| 30|           200|
+# |  Bob|   Clothing| 40|           150|
+# |Carol|Electronics| 25|           300|
+# | Dave| Home Goods| 35|           100|
+# |  Eve|   Clothing| 28|            80|
+# |Frank| Home Goods| 40|           120|
+# +-----+-----------+---+--------------+
+
+# Transformations and Actions
+
+# Filtering data to select customers over 30 with purchases above $100
+filtered_df = df.filter((df.Age > 30) & (df.PurchaseAmount > 100))
+filtered_df.show()
+# +-----+-----------+---+--------------+
+# | Name|   Category|Age|PurchaseAmount|
+# +-----+-----------+---+--------------+
+# |  Bob|   Clothing| 40|           150|
+# |Frank| Home Goods| 40|           120|
+# +-----+-----------+---+--------------+
+
+# Grouping and Aggregations
+# Calculate total purchases by category
+category_totals = df.groupBy("Category").sum("PurchaseAmount")
+category_totals.show()
+# +-----------+------------------+
+# |   Category|sum(PurchaseAmount)|
+# +-----------+------------------+
+# |Electronics|               500|
+# |   Clothing|               230|
+# | Home Goods|               220|
+# +-----------+------------------+
+
+# SQL Queries
+
+# Registering DataFrame as a SQL temporary view
+df.createOrReplaceTempView("customers")
+high_spenders = spark.sql("SELECT Name, Category, PurchaseAmount FROM customers WHERE PurchaseAmount > 100")
+high_spenders.show()
+# +-----+-----------+--------------+
+# | Name|   Category|PurchaseAmount|
+# +-----+-----------+--------------+
+# |Alice|Electronics|           200|
+# |  Bob|   Clothing|           150|
+# |Carol|Electronics|           300|
+# |Frank| Home Goods|           120|
+# +-----+-----------+--------------+
+
+# Reading and Writing Files
+
+# Reading from CSV with additional options
+csv_df = spark.read.csv("path/to/large_retail_data.csv", header=True, inferSchema=True, sep=",")
+csv_df.show(5)  # Display only first 5 rows for preview
+
+# Writing DataFrame to Parquet format for optimized storage and access
+df.write.parquet("output/retail_data")
+
+# RDD Basics
+
+# Creating an RDD and performing complex transformations
+sales_data = [(1, 100), (2, 150), (3, 200), (4, 250)]
+rdd = spark.sparkContext.parallelize(sales_data)
+
+# Transformations to calculate discounts for each sale
+discounted_sales_rdd = rdd.map(lambda x: (x[0], x[1] * 0.9))
+print(discounted_sales_rdd.collect())
+# Output: [(1, 90.0), (2, 135.0), (3, 180.0), (4, 225.0)]
+
+# Ending the Spark Session
+
+spark.stop()

vi-vn/html-vi.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HTML
-filename: learnhtml-vi.html
+filename: learnhtml-vi.txt
 contributors:
     - ["Christophe THOMAS", "https://github.com/WinChris"]
 translators:

wikitext.html.markdown

@@ -58,6 +58,7 @@ The syntax for tables is [very complicated](https://en.wikipedia.org/wiki/Help:T
 ```
 
 which renders to
+
 | **column title A** | **column title B** |
 |---|---|
 | cell A1 | cell B1 |
@@ -120,6 +121,7 @@ If a word is interrupted by a link, it is "blended" into the link. For example,
 To suppress this behavior, use `<nowiki>`. For example, `[[micro-]]<nowiki />second` renders to [micro-](https://en.wikipedia.org/wiki/micro-)second.
 
 There are three kinds of external linking. The third kind is preferred:
+
 | wikitext | renders to |
 |----|----|
 | `https://www.wikipedia.org` | [https://www.wikipedia.org](https://www.wikipedia.org) |

zh-cn/angularjs-cn.html.markdown

@@ -3,7 +3,7 @@ category: framework
 framework: AngularJS
 contributors:
     - ["Walter Cordero", "http://waltercordero.com"]
-filename: learnangular-cn.html
+filename: learnangular-cn.txt
 translators:
    - ["Jiang Haiyun", "http://www.atjiang.com"]
 lang: zh-cn

zh-cn/html-cn.html.markdown

@@ -1,6 +1,6 @@
 ---
 language: HTML
-filename: learnhtml-cn.html
+filename: learnhtml-cn.txt
 contributors:
     - ["Christophe THOMAS", "https://github.com/WinChris"]
 translators:

zh-cn/standard-ml-cn.html.markdown

@@ -5,7 +5,7 @@ contributors:
     - ["David Pedersen", "http://lonelyproton.com/"]
     - ["James Baker", "http://www.jbaker.io/"]
     - ["Leo Zovic", "http://langnostic.inaimathi.ca/"]
-filename: standard-ml-cn.html
+filename: standard-ml-cn.sml
 translators:
    - ["Buqian Zheng", "https://github.com/zhengbuqian"]
 lang: zh-cn