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How do I test for an empty JavaScript object?
...bj.constructor === Object
Note, though, that this creates an unnecessary array (the return value of keys).
Pre-ECMA 5:
function isEmpty(obj) {
for(var prop in obj) {
if(obj.hasOwnProperty(prop)) {
return false;
}
}
return JSON.stringify(obj) === JSON.stringify({});
}
jQuer...
jQuery set checkbox checked
...hen appending to an element directly in the page). I am looping through an array of data ("queriesToAddToGroup") to see if any rows have an attribute of COPY. If so I want to turn on the checkbox within the window that sets that attribute when a user saves from this window.
...
Get a specific bit from byte
I have a byte, specifically one byte from a byte array which came in via UDP sent from another device. This byte stores the on/off state of 8 relays in the device.
...
Find out how much memory is being used by an object in Python [duplicate]
...Using the bregman.suite, some tests with sys.getsizeof output a copy of an array object (data) in an object instance as being bigger than the object itself (mfcc).
>>> mfcc = MelFrequencyCepstrum(filepath, params)
>>> data = mfcc.X[:]
>>> sys.getsizeof(mfcc)
64
>>&g...
How to get instance variables in Python?
Is there a built-in method in Python to get an array of all a class' instance variables? For example, if I have this code:
...
How to extract URL parameters from a URL with Ruby or Rails?
...he full URL like the op asks, and the result values are strings instead of arrays, like in the other answers. thanks.
– jackocnr
Nov 15 '13 at 23:25
3
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NSString tokenize in Objective-C
...tring (useful link):
NSString *string = @"oop:ack:bork:greeble:ponies";
NSArray *chunks = [string componentsSeparatedByString: @":"];
Hope this helps!
Adam
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C# vs Java generics [duplicate]
... of the limitations
of erasure (such as being unable to
create generic arrays). This
also means that there is no
performance hit from runtime casts and
normally expensive boxing conversions.
Rather than saying ".NET generics is better than Java generics", one should look into the differe...
Get local IP address in node.js
...has one real network interface. It could easily be refactored to return an array of IPs for multi-interface machines.
function getIPAddress() {
var interfaces = require('os').networkInterfaces();
for (var devName in interfaces) {
var iface = interfaces[devName];
for (var i = 0; i < ...
ng-repeat :filter by single field
I have an array of products that I'm repeating over using ng-repeat and am using
12 Answers
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