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How to check if object has any properties in JavaScript?
...f (ad.hasOwnProperty(prop)) {
// handle prop as required
}
}
It is important to use the hasOwnProperty() method, to determine whether the object has the specified property as a direct property, and not inherited from the object's prototype chain.
Edit
From the comments: You can put t...
Custom HTTP headers : naming conventions
...
The recommendation is was to start their name with "X-". E.g. X-Forwarded-For, X-Requested-With. This is also mentioned in a.o. section 5 of RFC 2047.
Update 1: On June 2011, the first IETF draft was posted to deprecate the recommendation of using the "X-" prefix for n...
Get all directories within directory nodejs
...name)).filter(isDirectory)
Update for Node 10.10.0+
We can use the new withFileTypes option of readdirSync to skip the extra lstatSync call:
const { readdirSync } = require('fs')
const getDirectories = source =>
readdirSync(source, { withFileTypes: true })
.filter(dirent => dirent.i...
Send and receive messages through NSNotificationCenter in Objective-C?
...nter defaultCenter] removeObserver:self];
[super dealloc];
}
- (id) init
{
self = [super init];
if (!self) return nil;
// Add this instance of TestClass as an observer of the TestNotification.
// We tell the notification center to inform us of "TestNotification"
// notifica...
How to create new tmux session if none exists
...ession if a named tmux session exists, if not I want to create a new one with the given name.
7 Answers
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Redirect Windows cmd stdout and stderr to a single file
...follow
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edited Jan 19 '17 at 10:26
Abel
51.6k1919 gold badges132132 silver badges214214 bronze badges
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Using backticks around field names
...ich has a policy which bans them, I'm wondering if there's anything wrong with using backticks around field names in MySQL.
...
Where is git.exe located?
I have PyCharm and I am looking around trying to find git.exe to set it up with my repo.
37 Answers
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How to use/install gcc on Mac OS X 10.8 / Xcode 4.4
...ollowing command from your terminal:
xcode-select --install
Starting with Xcode 4.3 - you must now manually install command line tools from Xcode menu > Preferences > Downloads.
Alternatively, there are stand-alone installation packages both for Mountain Lion (10.8) and for Mavericks (...
How to create “No Activate” form in Firemonkey
...View subclass can prevent the window from becoming active when clicking on it:
2 Answers
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