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How to check if object has any properties in JavaScript?
...ave any way to create non-enumerable properties.
However this has changed now with ECMAScript 5th Edition, and we are able to create non-enumerable, non-writable or non-deletable properties, so the above method can fail, e.g.:
var obj = {};
Object.defineProperty(obj, 'test', { value: 'testVal',
...
How to avoid “cannot load such file — utils/popen” from homebrew on OSX
...ks! Though, changing permissions on /usr/local doesn't seem to be required now. "Homebrew no longer needs to have ownership of /usr/local. If you wish you can return /usr/local to its default ownership with: sudo chown root:wheel /usr/local"
– Bert
Nov 1 '16...
Why so red? IntelliJ seems to think every declaration/method cannot be found/resolved
...caches might be corrupt (this used to happen a lot more often than it does now); in that case, regenerate them by
Clicking File -> Invalidate Caches and restarting the IDE
(though loading the project will take a while while the caches are recreated).
...
List of ANSI color escape sequences
...he naming, use, and grouping of colours in human languages is fascinating. Now, back to the show.
8-bit (256) colours
Technology advanced, and tables of 256 pre-selected colours became available, as shown below.
Using these above, you can make pink text like so:
\033[38;5;206m #That is, \033[38...
How to check if object property exists with a variable holding the property name?
...otypeOf(yoshi, hattori);
if ("sneak" in yoshi)
console.log("Yoshi can now sneak");
if (!("creep" in hattori))
console.log("Hattori cannot creep");
Object.setPrototypeOf(hattori, kuma);
if ("creep" in hattori)
console.log("Hattori can now creep");
if ("creep" in yoshi)
console.log(...
How can we run a test method with multiple parameters in MSTest?
...
I've found that something similar is now possible in Visual Studio 2012 Update 1, just FYI for future consideration of anybody looking at this answer.
– McAden
Dec 4 '12 at 19:53
...
Add margin between a RadioButton and its label in Android?
...
For anyone reading this now, the accepted answer will lead to some layout problems on newer APIs causing too much padding.
On API <= 16 you can set paddingLeft on the radio button to set the padding relative to the radio button's view bounds. ...
Call Activity method from adapter
...ould not cast mContext to your Activity as you are avoiding reuse of code. Now this adapter can only be used inside the Activity which you have casted your mContext variable to, where if you have a listener defined then you can reuse the same Adapter in another Activity. Trust me i have spent enough...
How to tell whether a point is to the right or left side of a line
...I choose two points ( a and b ) and draw an imaginary line between them. Now I want to have all points that are left from this line in one set and those that are right from this line in the other set.
...
asynchronous vs non-blocking
...Window messages, whereas .NET asynchronous IO is free-threaded (you don't know what thread your callback will be called on).
So they don't always mean the same thing. To distil the socket example, we could say:
Blocking and synchronous mean the same thing: you call the API, it hangs up the thread...