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How do I negate a condition in PowerShell?
...ld also use bitwise exclusive or, though it's not the most readable/understandable method.
if ((test-path C:\code) -bxor 1) {write "it doesn't exist!"}
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#import using angle brackets < > and quote marks “ ”
..." for files in your project that you've got the implementation source to, and angle brackets <> when you're referencing a library or framework.
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'const string' vs. 'static readonly string' in C#
...e a const value in a different assembly, then update the original assembly and change the value, the other assembly won't see the change until you re-compile it.
A static readonly string is a normal field that gets looked up at runtime. Therefore, if the field's value is changed in a different ass...
IBOutlet and IBAction
What is the purpose of using IBOutlets and IBActions in Xcode and Interface Builder?
10 Answers
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How long does it take for GitHub page to show changes after changing index.html
...t (or break a cache) you can append a query string like myfile.jpg?ver=123 and every time you update the string the cache will bust, and you can verify that the CDN is updating.
– Joel Glovier
Dec 19 '16 at 14:10
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Import module from subfolder
... What would the syntax be if previously Foo1 was in the parent directory and one coded something like from Foo1 import *. Is there a way to achieve that same effect so you don't have to prefix everything with Foo1?
– jxramos
Apr 12 '17 at 23:41
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Clear Application's Data Programmatically
...ationUserData().
I highly recommend using it in new applications:
import android.os.Build.*;
if (VERSION_CODES.KITKAT <= VERSION.SDK_INT) {
((ActivityManager)context.getSystemService(ACTIVITY_SERVICE))
.clearApplicationUserData(); // note: it has a return value!
} else {
// ...
How to darken a background using CSS?
...HOLE body. Is there any way I can just make the background-image darker, and not everything else?
8 Answers
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SharedPreferences.onSharedPreferenceChangeListener not being called consistently
..., but eventually, will get garbage collected, removed from the WeakHashMap and stop working.
Keep a reference to the listener in a field of your class and you will be OK, provided your class instance is not destroyed.
i.e. instead of:
prefs.registerOnSharedPreferenceChangeListener(
new SharedPr...
Select objects based on value of variable in object using jq
...f you meant the keys after the filter, giving "FOO" "BAR", use this answer and use .key instead of [.key, .value.name].
– ggorlen
Sep 12 at 4:26
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