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Igor Chubin 2018-06-10 15:35:09 +00:00
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@ -191,79 +191,81 @@ To activate tab completion support for `cht.sh`, add the `:bash_completion` scri
One of the important properties of any real cheat sheet, One of the important properties of any real cheat sheet,
is that it could be used fully unnoticed. is that it could be used fully unnoticed.
cheat.sh can be used completely unnoticed too. The cheat.sh client, cht.sh, has cheat.sh can be used completely unnoticed too. The cheat.sh client, `cht.sh`, has
a special mode, called *stealth mode*, where you don't need even to touch your a special mode, called **stealth mode**, using that you don't even need to touch your
keyboard to open some cheat sheet. keyboard to open some cheat sheet.
In this mode, as soon as you select some text with the mouse (and it is added In this mode, as soon as you select some text with the mouse (and thus it is added
into the selection buffer of X Window System or into the clipboard) it's used into the selection buffer of X Window System or into the clipboard) it's used
as a query string for cheat.sh, and correspondent cheat sheets are shown. as a query string for cheat.sh, and the correspondent cheat sheet is automatically shown.
Let's imagine, that you are having an online interview with a shared documents Let's imagine, that you are having an online interview, where your interviewer asks you
(say Google Docs), where the interviewer ask you some questions (or where you some questions using a shared document (say Google Docs) and you are supposed
typing them in on your own, just to show to the interviewer that you've heard to write your coding answers there (you make type in the questions on your own,
it right). just to show to the interviewer that you've heard it right).
To see the cheat sheets for the questions, you just have to select them, When using the stealth mode of `cht.sh`, the only thing you need to do to see the cheat sheet for a question,
and do nothing more. If you don't want to see the comments and the only thing you need is code, is to select the question with the mouse.
use `?Q` when going into the stealth mode. If you don't want any text in the answers and the only thing you need is code,
use the `Q` option when starting the stealth mode.
``` ```
She: Hi! | $ cht.sh --shell python You: Hi! | $ cht.sh --shell python
You: Hi! | cht.sh/python> stealth Q She: Hi! | cht.sh/python> stealth Q
She: Are you ready for a small interview? | stealth: you are in the stealth mode; select any text in any window for a query She: Are you ready for a small interview? | stealth: you are in the stealth mode; select any text
She: Just a couple of questions about python | stealth: selections longer than 5 words are ignored She: Just a couple of questions about python | stealth: selections longer than 5 words are ignored
She: We will talk about python | stealth: query arguments: ?Q She: We will talk about python | stealth: query arguments: ?Q
She: Let's start from something simple. | stealth: use ^C to leave this mode She: Let's start from something simple. | stealth: use ^C to leave this mode
She: Do you known how to reverse a list in python? | She: Do you known how to reverse a list in python?|
You: Sure | You: Sure |
You: (selecting "reverse a list") | stealth: reverse a list You: (selecting "reverse a list") | stealth: reverse a list
| reverse_lst = lst[::-1] | reverse_lst = lst[::-1]
You: lst[::-1]? | You: lst[::-1]? |
She: Good. | She: Good. |
She: Do you know how to chain a list of lists? | She: Do you know how to chain a list of lists? |
You: (selecting "chain a list of lists") | stealth: chain a list of lists You: (selecting "chain a list of lists") | stealth: chain a list of lists
| import itertools | import itertools
| a = [["a","b"], ["c"]] | a = [["a","b"], ["c"]]
| print list(itertools.chain.from_iterable(a)) | print list(itertools.chain.from_iterable(a))
You: May I use external modules? | You: May I use external modules? |
She: What module do you want to use? | She: What module do you want to use? |
You: itertools | You: itertools |
She: Yes, you may use it | She: Yes, you may use it |
You: Ok, then: | You: Ok, then: |
You: itertools.chain.from_iterable(a) | You: itertools.chain.from_iterable(a) |
She: Good. Let's try something harder. | She: Good. Let's try something harder. |
She: What about quicksort implementation? | She: What about quicksort implementation? |
You: (selecting "quicksort implementation") | stealth: quicksort implementation You: (selecting "quicksort implementation") | stealth: quicksort implementation
You: Let's me think about it. | (some big and clumsy lowlevel implementation is shown) You: Let's me think about it. | (some big and clumsy lowlevel implementation is shown)
You: Well...(starting typing it in) | def sort(array=[12,4,5,6,7,3,1,15]): You: Well...(starting typing it in) | def sort(array=[12,4,5,6,7,3,1,15]):
| less = [] | less = []
| equal = [] | equal = []
She: (seeing your ugly pascal style) | greater = [] She: (seeing your ugly pascal style) | greater = []
She: Could you write it more concise? | if len(array) > 1: She: Could you write it more concise? | if len(array) > 1:
| pivot = array[0] | pivot = array[0]
You: What do you mean? | for x in array: You: What do you mean? | for x in array:
| if x < pivot: less.append(x) | if x < pivot: less.append(x)
She: I mean, | if x == pivot: equal.append(x) She: I mean, | if x == pivot: equal.append(x)
She: do you really need all these ifs and fors? | if x > pivot: greater.append(x) She: do you really need all these ifs and fors? | if x > pivot: greater.append(x)
She: Could you just use filter instead may be? | return sort(less)+equal+sort(greater) She: Could you just use filter instead may be? | return sort(less)+equal+sort(greater)
| else: | else:
You: quicksort with filter? | return array You: quicksort with filter? | return array
| |
She: Yes | stealth: quicksort filter She: Yes | stealth: quicksort filter
You: (selecting "quicksort with filter") | return qsort(filter(lt, L[1:]))+[pivot]+qsort(filter(ge, L[1:])) You: (selecting "quicksort with filter") | return qsort(filter(lt, L[1:]))+[pivot] \
You: Ok, I will try. | You: Ok, I will try. | +qsort(filter(ge, L[1:]))
You: Something like that? | You: Something like that? |
You: qsort(filter(lt, L[1:]))+[pivot]+qsort(filter(ge, L[1:]))| You: qsort(filter(lt, L[1:]))+[pivot] \ |
| + qsort(filter(ge, L[1:])) |
She: Yes! Perfect! Exactly what I wanted to see! | |
She: Yes! Perfect! Exactly what I wanted to see! |
``` ```
Or course, it is just fun, and you should never cheat in your coding interviews, Or course, it is just fun, and you should never cheat in your coding interviews,
because you know what happens otherwise. because you know what happens otherwise.
![when you lie in your interview](http://cheat.sh/files/when-you-lie.png) ![when you lie in your interview](http://cheat.sh/files/when-you-lie-katze.png)
## Editors integration ## Editors integration