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How to initialize an array in one step using Ruby?
...n also use a range:
array = ('1'..'3').to_a # parentheses are required
# or
array = *('1'..'3') # parentheses not required, but included for clarity
For arrays of whitespace-delimited strings, you can use Percent String syntax:
array = %w[ 1 2 3 ]
You can also pass a block to Array.new t...
Enum type constraints in C# [duplicate]
...nts, tests, documents and ships the feature. So far, no one has done that for this one. There's no particularly unusual reason why not; we have lots of other things to do, limited budgets, and this one has never made it past the "wouldn't this be nice?" discussion in the language design team.
The C...
Perl flags -pe, -pi, -p, -w, -d, -i, -t?
I have seen lots of ways of running Perl code or scripts, with different flags. However, when I try to google for what each flag means, I mainly get results to generic Perl sites and no specific information regarding the flags or their use is found there.
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shell init issue when click tab, what's wrong with getcwd?
once i click Tab on bash, the error message will appear, what's wrong?
4 Answers
4
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Regex: ignore case sensitivity
How can I make the following regex ignore case sensitivity? It should match all the correct characters but ignore whether they are lower or uppercase.
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How to work around the lack of transactions in MongoDB?
...telling me to switch back to regular RDBMS systems if I need transactions or use atomic operations or two-phase commit . The second solution seems the best choice. The third I don't wish to follow because it seems that many things could go wrong and I can't test it in every aspect. I'm having a ...
Matplotlib - Move X-Axis label downwards, but not X-Axis Ticks
...Using tips from my previous question: Matplotlib - label each bin ,
I've more or less go the kinks worked out.
2 Answers
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Can I store images in MySQL [duplicate]
...e where users upload their images as part of registration. I want it that for each image, there should be a thumb created with PHP (which is not that difficult). I want to save the thumbs (since they are very small) in the database and I use MySQL. (I don't want to save the thumbs as physical files ...
Can you list the keyword arguments a function receives?
I have a dict, which I need to pass key/values as keyword arguments.. For example..
5 Answers
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Can “this” ever be null in Java?
...sn't null.
The JLS says :
When used as a primary expression, the keyword this denotes a value that is a reference to the object for which the instance method was invoked (§15.12), or to the object being constructed.
If you invoked a method from an object, then the object exists or you would...