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What is the difference between compare() and compareTo()?
What is the difference between Java's compare() and compareTo() methods? Do those methods give same answer?
16 Answers
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What is the difference between 'my' and 'our' in Perl?
I know what my is in Perl. It defines a variable that exists only in the scope of the block in which it is defined. What does our do?
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How to horizontally center a
...entering.
If you are targeting Internet Explorer 8 (and later), it might be better to have this instead:
#inner {
display: table;
margin: 0 auto;
}
It will make the inner element center horizontally and it works without setting a specific width.
Working example here:
#inner {
display: t...
How do I convert a String object into a Hash object?
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The string created by calling Hash#inspect can be turned back into a hash by calling eval on it. However, this requires the same to be true of all of the objects in the hash.
If I start with the hash {:a => Object.new}, then its string repr...
Create array of symbols
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The original answer was written back in September '11, but, starting from Ruby 2.0, there is a shorter way to create an array of symbols! This literal:
%i[address city state postal country]
will do exactly what you want.
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How to 'git pull' into a branch that is not the current one?
When you run git pull on the master branch, it typically pulls from origin/master . I am in a different branch called newbranch , but I need to run a command that does a git pull from origin/master into master but I cannot run git checkout to change the selected branch until after the...
Any reason to write the “private” keyword in C#?
...ivate is the default everywhere in C# (meaning that if I don't write public , protected , internal , etc. it will be private by default). (Please correct me if I am wrong.)
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Purpose of Python's __repr__
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__repr__ should return a printable representation of the object, most likely one of the ways possible to create this object. See official documentation here. __repr__ is more for developers while __str__ is for end users.
A simple example:
>>> c...
Reading an image file into bitmap from sdcard, why am I getting a NullPointerException?
How can I read an image file into bitmap from sdcard?
4 Answers
4
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Why is reading lines from stdin much slower in C++ than Python?
I wanted to compare reading lines of string input from stdin using Python and C++ and was shocked to see my C++ code run an order of magnitude slower than the equivalent Python code. Since my C++ is rusty and I'm not yet an expert Pythonista, please tell me if I'm doing something wrong or if I'm mis...