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Difference between single and double quotes in Bash
...mple examples.
Single quotes can be used around text to prevent the shell from interpreting any special characters. Dollar signs, spaces, ampersands, asterisks and other special characters are all ignored when enclosed within single quotes.
$ echo 'All sorts of things are ignored in single quotes...
Javascript: get package.json data in gulpfile.js
Not a gulp-specific question per-se, but how would one get info from the package.json file within the gulpfile.js; For instance, I want to get the homepage or the name and use it in a task.
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PHP cURL vs file_get_contents
...ile_get_contents on larger request need over 5 seconds when cURL need only from 1.4 to 1.9 seconds what is double faster.
I need to add one note on this that I just send GET and recive JSON content. If you setup cURL properly, you will have a great response. Just "tell" to cURL what you need to send...
Best way to reverse a string
...hars in C# are unicode characters, not bytes. Xor may be faster, but apart from being far less readable, that may even be what Array.Reverse() uses internally.
– Nick Johnson
Oct 23 '08 at 13:18
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Getting ssh to execute a command in the background on target machine
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Also from the wikipedia article on nohup: "Also note that a closing SSH session does not always send a HUP signal to depending processes. Among others, this depends on whether a pseudo-terminal was allocated or not." So while stri...
What is the difference between is_a and instanceof?
...There is a excellent blog post about what experienced developers can learn from beginners. Hopefully you can see it at the top right. Beware of premature optimisation! Only solve timing problems after they've become problems! If the performance is acceptable as it is, don't spend time changing it!
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Getting user input [duplicate]
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Use the raw_input() function to get input from users (2.x):
print "Enter a file name:",
filename = raw_input()
or just:
filename = raw_input('Enter a file name: ')
or if in Python 3.x:
filename = input('Enter a file name: ')
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Saving vim macros
... They would have to be escaped properly.
So to save a macro you can do:
From normal mode: qq
enter whatever commands
From normal mode: q
open .vimrc
"qp to insert the macro into your let @q = '...' line
share
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Windows batch: echo without new line
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@user246694 < nul is a redirection from the NUL device. It contains nothing, but that is enough for set /p to stop waiting for user input
– jeb
Jul 17 '14 at 5:53
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Django set default form values
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If you are creating modelform from POST values initial can be assigned this way:
form = SomeModelForm(request.POST, initial={"option": "10"})
https://docs.djangoproject.com/en/1.10/topics/forms/modelforms/#providing-initial-values
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