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How can I check if my python object is a number? [duplicate]
...al('2.0'), complex(2,0), Fraction(2,1), '2']:
... print '%15s %s' % (n.__repr__(), isinstance(n, Number))
2 True
2.0 True
Decimal('2.0') True
(2+0j) True
Fraction(2, 1) True
'2' False
This is, of course, contrary to duck typing. If you are more ...
How can I trigger a JavaScript event click
...atchEvent(new Event('click'));
Original Answer
Here is what I use: http://jsfiddle.net/mendesjuan/rHMCy/4/
Updated to work with IE9+
/**
* Fire an event handler to the specified node. Event handlers can detect that the event was fired programatically
* by testing for a 'synthetic=true' p...
Multiple returns from a function
...ue is also used in some functions defined by php itself (e.g. $count in str_replace, $matches in preg_match). This might feel quite different from returning multiple values, but it is worth at least knowing about.
A third method is to use an object to hold the different values you need. This is mor...
How can I write output from a unit test?
...means that the string is a formatting string (documented at docs.microsoft.com/en-us/dotnet/standard/base-types/…). To use a literal { in a string, you need to double it. To print your string use WriteLine("he{{ll}}o");
– Walter
Nov 7 '17 at 21:59
...
How can I remove a character from a string using Javascript?
...ince everyone's having so much fun here and user1293504 doesn't seem to be coming back any time soon to answer clarifying questions, here's a method to remove the Nth character from a string:
String.prototype.removeCharAt = function (i) {
var tmp = this.split(''); // convert to an array
tmp...
Using global variables between files?
...al variables" from C.
A global variable is actually defined in a module's __dict__ and can be accessed from outside that module as a module attribute.
So, in your example:
# ../myproject/main.py
# Define global myList
# global myList - there is no "global" declaration at module level. Just insi...
How can I configure the font size for the tree item in the package explorer in Eclipse?
...
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jquery IDs with spaces
...t be empty),
and that it can’t contain any space characters.
Link: http://mathiasbynens.be/notes/html5-id-class
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Random number generation in C++11: how to generate, how does it work? [closed]
... MyRNG; // the Mersenne Twister with a popular choice of parameters
uint32_t seed_val; // populate somehow
MyRNG rng; // e.g. keep one global instance (per thread)
void initialize()
{
rng.seed(seed_val);
}
Now we can create distributions:
std::uniform_int_distribu...
Why is it not possible to extend annotations in Java?
...a web-app. I so badly wanted to have a "super" annotation that was called "HTTP_METHOD". It later on dawned on me that it didn't matter. Well, I had to settle with using a hidden field in the HTML form to identify DELETE and PUT (because POST and GET were available anyway).
On the server-side, I lo...