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Checking whether a variable is an integer or not [duplicate]
...t use type. It is almost never the right answer in Python, since it blocks all the flexibility of polymorphism. For instance, if you subclass int, your new class should register as an int, which type will not do:
class Spam(int): pass
x = Spam(0)
type(x) == int # False
isinstance(x, int) # True
Thi...
$(document).ready equivalent without jQuery
...ent
if ( document.addEventListener ) {
// Use the handy event callback
document.addEventListener( "DOMContentLoaded", function(){
document.removeEventListener( "DOMContentLoaded", arguments.callee, false );
jQuery.ready();
}, false );
// If IE...
Google Maps API v3: How to remove all markers?
In Google Maps API v2, if I wanted to remove all the map markers, I could simply do:
31 Answers
...
printf format specifiers for uint32_t and size_t
...ng size_t to be the same as unsigned long (possibly 64 bits) when it's actually an unsigned int (32 bits). Try using %zu in both cases.
I'm not entirely certain though.
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“var” or no “var” in JavaScript's “for-in” loop?
...erties, so using the standard "for in" loop w/o the var statement will actually fail and return a ReferenceError.
– dkugappi
Jun 11 '13 at 15:01
2
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Wrapping a C library in Python: C, Cython or ctypes?
I want to call a C library from a Python application. I don't want to wrap the whole API, only the functions and datatypes that are relevant to my case. As I see it, I have three choices:
...
Generate a random point within a circle (uniformly)
...triangle ABC, where |AB|=|BC|? Let's make this easier by extending to a parallelogram ABCD. It's easy to generate points uniformly in ABCD. We uniformly pick a random point X on AB and Y on BC and choose Z such that XBYZ is a parallelogram. To get a uniformly chosen point in the original triangle we...
Splitting templated C++ classes into .hpp/.cpp files--is it possible?
...the implementation of a template class in a separate cpp file and compile. All the ways to do so, if anyone claims, are workarounds to mimic the usage of separate cpp file but practically if you intend to write a template class library and distribute it with header and lib files to hide the implemen...
Do I need dependency injection in NodeJS, or how to deal with …?
...eaddirSync method or you can return an entirely different module when you call require.
Method 1:
var oldmethod = fs.readdirSync;
fs.readdirSync = function(dir) {
return ['somefile.txt', 'error.txt', 'anotherfile.txt'];
};
*** PERFORM TEST ***
*** RESTORE METHOD AFTER TEST ****
fs.readddirS...
How to make a variadic macro (variable number of arguments)
...
The reason for ## before VA_ARGS is that it swallows the preceding comma in case the variable-argument list is empty, eg. FOO("a") expands to printf("a"). This is an extension of gcc (and vc++, maybe), C99 requires at least one argument to be present in place of the elli...