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Is there a difference between /\s/g and /\s+/g?
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In the first regex, each space character is being replaced, character by character, with the empty string.
In the second regex, each contiguous string of space characters is being replaced with the empty string because of the +.
However, ju...
SQL JOIN - WHERE clause vs. ON clause
After reading it, this is not a duplicate of Explicit vs Implicit SQL Joins .
The answer may be related (or even the same) but the question is different.
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What is the difference between string primitives and String objects in JavaScript?
...onality. That aside, the behaviour you are trying to name is called auto-boxing. So what actually happens is that a primitive is converted to its wrapper type when a method of the wrapper type is invoked. Put simple:
var s = 'test';
Is a primitive data type. It has no methods, it is nothing more ...
Creating a left-arrow button (like UINavigationBar's “back” style) on a UIToolbar
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I used the following psd that I derived from http://www.teehanlax.com/blog/?p=447
http://www.chrisandtennille.com/pictures/backbutton.psd
I then just created a custom UIView that I use in the customView property of the toolbar item.
Works well for me.
Edit: As pointed out by Prairie...
When are you supposed to use escape instead of encodeURI / encodeURIComponent?
...e it!
escape() is defined in section B.2.1.2 escape and the introduction text of Annex B says:
... All of the language features and behaviours specified in this annex have one or more undesirable characteristics and in the absence of legacy usage would be removed from this specification. ...
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Value of i for (i == -i && i != 0) to return true in Java
...ns the problem with the most negative numbers and specifies it's the sole exception :
The most negative number in two's complement is sometimes called "the
weird number," because it is the only exception.
Of course you have the same phenomenon for Long.Min_Value if you store it in a long var...
Heavy usage of Python at Google [closed]
...s already prominent at Google.
Indeed, there's one apparently attractive explanation that I can definitely deny: it's not that Google uses Python because it employs so many prominent Pythonistas -- rather, most "prominent Pythonista" googlers joined Google, at least in part, because we knew about P...
Stack smashing detected
I am executing my a.out file. After execution the program runs for some time then exits with the message:
9 Answers
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Serializing object that contains cyclic object value
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Use the second parameter of stringify, the replacer function, to exclude already serialized objects:
var seen = [];
JSON.stringify(obj, function(key, val) {
if (val != null && typeof val == "object") {
if (seen.indexOf(val) >= 0) {
return;
}
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What's a standard way to do a no-op in python?
...r which the corresponding action is to do nothing. I realise I could just exclude those if statements, but for readability I find it helps to include them all, so that if you are looking through the code you can see what happens as a result of each option. How do I code the no-op? Currently, I'm doi...