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How to specialize std::hash::operator() for user-defined type in unordered containers?
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You are expressly allowed and encouraged to add specializations to namespace std*. The correct (and basically only) way to add a hash function is this:
namespace std {
template <> struct hash<Foo>
{
size_t operato...
Using jQuery how to get click coordinates on the target element
...ocation
Try this Demo : http://jsfiddle.net/AMsK9/
Edit :
1) event.pageX, event.pageY gives you the mouse position relative document !
Ref : http://api.jquery.com/event.pageX/
http://api.jquery.com/event.pageY/
2) offset() : It gives the offset position of an element
Ref : http://api....
passing several arguments to FUN of lapply (and others *apply)
...ddendum: You can use ... when you're writing your own functions, too. For example, say you write a function that calls plot at some point, and you want to be able to change the plot parameters from your function call. You could include each parameter as an argument in your function, but that's annoy...
JavaScript checking for null vs. undefined and difference between == and ===
...when you ask an object for a property it doesn't have. But it can also be explicitly used in all of those situations. (There's a difference between an object not having a property, and having the property with the value undefined; there's a difference between calling a function with the value undefi...
How should I validate an e-mail address?
...oing this which are included in Android already or would I have to use RegExp?
32 Answers
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Best way to parse command-line parameters? [closed]
...in Scala?
I personally prefer something lightweight that does not require external jar.
26 Answers
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Why is there no tuple comprehension in Python?
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You can use a generator expression:
tuple(i for i in (1, 2, 3))
but parentheses were already taken for … generator expressions.
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Origin null is not allowed by Access-Control-Allow-Origin
I have made a small xslt file to create an html output called weather.xsl with code as follows:
7 Answers
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Bash script absolute path with OS X
... trying to obtain the absolute path to the currently running script on OS X.
15 Answers
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What is the difference between the | and || or operators?
I have always used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: | . What is the difference between those two usages? Are there any caveats when using one over the other or are they interchangeable?
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