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How to efficiently count the number of keys/properties of an object in JavaScript?
... = 0;
for (var k in myobj) if (myobj.hasOwnProperty(k)) ++count;
Another idea relies on caching the hasOwnProperty method:
var hasOwn = Object.prototype.hasOwnProperty;
var count = 0;
for (var k in myobj) if (hasOwn.call(myobj, k)) ++count;
Whether this is faster or not on a given environment i...
Regular vs Context Free Grammars
I'm studying for my computing languages test, and there's one idea I'm having problems wrapping my head around.
8 Answe...
In Python how should I test if a variable is None, True or False
...
I believe that throwing an exception is a better idea for your situation. An alternative will be the simulation method to return a tuple. The first item will be the status and the second one the result:
result = simulate(open("myfile"))
if not result[0]:
print "error par...
How to open standard Google Map application from my application?
... the user doesn't have the maps app installed then it's going to be a good idea to catch the ActivityNotFoundException, as @TonyQ states, then we can start the activity again without the maps app restriction, we can be pretty sure that we will never get to the Toast at the end since an internet brow...
How To fix white screen on app Start up?
... default. However, in an app that uses a dark background it's a really bad idea. The solution is to create a custom style for your app and specify 'android:windowBackground' to the color you want to use. See the section "the perfect preview window" cyrilmottier.com/2013/01/23/android-app-launching-m...
Xcode variables
...g if it's possible to get the build type (i.e., Release or Debug ). Any ideas?
2 Answers
...
Processing $http response in service
... Plunk that does what you want: http://plnkr.co/edit/TTlbSv?p=preview
The idea is that you work with promises directly and their "then" functions to manipulate and access the asynchronously returned responses.
app.factory('myService', function($http) {
var myService = {
async: function() {
...
How do I maintain the Immersive Mode in Dialogs?
...lags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
Clearly this is not ideal but it seems to be an Android bug, they should check if the Window has immersive set.
I've updated my working test code (forgive the hacky messiness) to Github. I've tested on the Nexus 5 emulator, it will probably blo...
'UserControl' constructor with parameters in C#
...eed be.
Regardless of which paradigm you use, it is also generally a good idea to put lengthy initialization code in the OnLoad() method, especially since the DesignMode property will work at load time, but not work in the constructor.
...
What is the Linux equivalent to DOS pause?
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Usually it's a better idea to ask for a specific key like enter, space or Y. "ANY" can be confusing to some users, there is a TAB-key so why no ANY-key and for sure there are keys that are potentially dangerous like ESCAPE, CTRL, CMD, the power bu...