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Check if value exists in Postgres array
... these indices. Example:
Index for finding an element in a JSON array
None of this works for NULL elements. To test for NULL:
Check if NULL exists in Postgres array
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How can I deploy/push only a subdirectory of my git repo to Heroku?
...s. This solution works great if you don't care about git logs on Heroku. One can tweak above script in case there are some folders you want to ignore, within the application sub path to be deployed. For example I did not want spec folder on heroku. Example Gist
– ch4nd4n
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What is the difference between the states selected, checked and activated in Android?
... it is set on.
So here is the difference:
Activated was introduced in Honeycomb so you can't use it before that
Activated is now a property of every View. It has methods setActivated() and isActivated()
Activated propagates to children of the View on which it is set
Checked revolves around a Vie...
Stop setInterval call in JavaScript
...
You can set a new variable and have it incremented by ++ (count up one) every time it runs, then I use a conditional statement to end it:
var intervalId = null;
var varCounter = 0;
var varName = function(){
if(varCounter <= 10) {
varCounter++;
/* your code goes h...
CSS: 100% width or height while keeping aspect ratio?
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If you only define one dimension on an image the image aspect ratio will always be preserved.
Is the issue that the image is bigger/taller than you prefer?
You could put it inside a DIV that is set to the maximum height/width that you want fo...
How can I calculate the difference between two dates?
...cts represent exact moments of time, they do not have any associated time-zone information. When you convert a string to a date using e.g. an NSDateFormatter, the NSDateFormatter converts the time from the configured timezone. Therefore, the number of seconds between two NSDate objects will always b...
Class.forName() vs ClassLoader.loadClass() - which to use for dynamic loading? [duplicate]
...ill see that all it does is load the class, not initialize it).
The first one (Class.forName("SomeClass");) will:
use the class loader that loaded the class which calls this code
initialize the class (that is, all static initializers will be run)
The other (ClassLoader.getSystemClassLoader().lo...
Cleaning `Inf` values from an R dataframe
...zing the is.na<- would not accept a result from lapply but would accept one from sapply.
– IRTFM
Aug 30 '12 at 1:30
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Build error: You must add a reference to System.Runtime
...
working one-liner, does not depend on path to library and does not require to install anything, should be accepted!)
– Ivan Zverev
Jan 4 '19 at 14:58
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Set Locale programmatically
... activity and update the configuration's locale in case a fresh new locale one is created.
Sample code:
@Override
public void applyOverrideConfiguration(Configuration overrideConfiguration) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && Build.VERSION.SDK_INT <= B...