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How can I add to List
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Sorry, but you can't.
The wildcard declaration of List<? extends Number> foo3 means that the variable foo3 can hold any value from a family of types (rather than any value of a specific type). It means that any of these...
How to take the first N items from a generator or list in Python? [duplicate]
...e all valid: array[start:], array[:stop], array[::step]
Slicing a generator
import itertools
top5 = itertools.islice(my_list, 5) # grab the first five elements
You can't slice a generator directly in Python. itertools.islice() will wrap an object in a new slicing generator using the syntax i...
How to make a DIV visible and invisible with JavaScript
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if [DIV] is an element then
[DIV].style.visibility='visible'
OR
[DIV].style.visibility='hidden'
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Why should I avoid using Properties in C#?
...ason, but I don't really understand. Can anyone explain to me why I should or should not use properties?
In C# 3.0, with automatic properties, does this change?
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How to draw vertical lines on a given plot in matplotlib?
Given a plot of signal in time representation, how to draw lines marking corresponding time index?
6 Answers
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Why do you need to put #!/bin/bash at the beginning of a script file?
I have made Bash scripts before and they all ran fine without #!/bin/bash at the beginning.
9 Answers
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What is the difference between Bower and npm?
...s have many downsides. You just have to pick which you can live with.
History
npm started out managing node.js modules (that's why packages go into node_modules by default), but it works for the front-end too when combined with Browserify or webpack.
Bower is created solely for the front-end and ...
How can I check if a directory exists in a Bash shell script?
What command can be used to check if a directory exists or not, within a Bash shell script?
35 Answers
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Initializing a struct to 0
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The first is easiest(involves less typing), and it is guaranteed to work, all members will be set to 0[Ref 1].
The second is more readable.
The choice depends on user preference or the one which your coding standard mandates.
[Ref 1] Reference C99 Standard 6.7.8.21:
If there are...
OSError: [Errno 2] No such file or directory while using python subprocess in Django
...inside Python code using subprocess.call() which throws the following error:
3 Answers
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