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JavaScript isset() equivalent
In PHP you can do if(isset($array['foo'])) { ... } . In JavaScript you often use if(array.foo) { ... } to do the same, but this is not exactly the same statement. The condition will also evaluate to false if array.foo does exists but is false or 0 (and probably other values as well).
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What is the difference between the different methods of putting JavaScript code in an ?
I have seen the following methods of putting JavaScript code in an <a> tag:
7 Answers
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Postgres: SQL to list table foreign keys
...g SQL to list all foreign keys for a given table? I know the table name / schema and I can plug that in.
23 Answers
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How to sort an array of objects by multiple fields?
...t should preform a bit better as it does not have to determine the correct settings during the comparison. I have not done any profiling though.
var sort_by;
(function() {
// utility functions
var default_cmp = function(a, b) {
if (a == b) return 0;
return a < b ...
Why not use HTTPS for everything?
If I was setting up a server, and had the SSL certificate(s), why wouldn't I use HTTPS for the entire site instead of just for purchases/logins? I would think it would make more sense just to encrypt the entire site, and protect the user entirely. It would prevent problems such as deciding what has ...
Why java.util.Optional is not Serializable, how to serialize the object with such fields
...consisent behavior across callers. It's often better to have whatever code sets that field apply some policy at the time it's set.
Sometimes people want to put Optional into collections, like List<Optional<X>> or Map<Key,Optional<Value>>. This too is usually a bad idea. It's...
Wolfram's Rule 34 in XKCD [closed]
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Hmm, I like 22 with settings 31*16
– Dykam
Dec 30 '09 at 21:32
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How to quickly and conveniently disable all console.log statements in my code?
...le.log() in a wrapper that conditionally calls it, i.e.:
DEBUG = true; // set to false to disable debugging
function debug_log() {
if ( DEBUG ) {
console.log.apply(this, arguments);
}
}
To not have to change all the existing calls, you can use this instead:
DEBUG = true; // set t...
RecyclerView onClick
Has anyone using RecyclerView found a way to set an onClickListener to items in the RecyclerView ?
I thought of setting a listener to each of the layouts for each item but that seems a little too much hassle
I'm sure there is a way for the RecyclerView to listen for the onClick event but I ...