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Why is using the rails default_scope often recommend against?
...WHERE "posts"."published" = 't'
Well this is pretty much what we expect. Now lets try:
2.1.1 :004 > Post.new
=> #<Post id: nil, title: nil, published: true, created_at: nil, updated_at: nil>
And there we have the first big problem with default scope:
=> default_scope will aff...
Why does the JVM still not support tail-call optimization?
...ementation and MLVM has listed the feature as "proto 80%" for some time now.
4 Answers
...
querySelector search immediate children
...= this.id; // remember current element id
this.id = 'ID_' + Date.now(); // assign new unique id
selectors = selectors.replace(/((^|,)\s*):scope/g, '$1#' + this.id); // replace :scope with #ID
var result = doc[method](selectors);
this.id = id; // restore previo...
PHP global in functions
...these will make your code depend on the outside. Which means, you have to know the full global state your application is in before you can reliably call any of these. The function cannot exist without that environment.
Using the superglobals might not be an obvious flaw, but if you call your code ...
Replace new lines with a comma delimiter with Notepad++?
...Click Edit -> Blank Operations -> EOL to space
[All the items should now be in a single line separated by a 'space']
Select any 'space' and do a Replace All (by ',')
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Code Golf: Lasers
... $_.
$s="#";
$s is the symbol of whatever the beam is sitting on top of now. Since the laser emitter is to be treated like a wall, set this to be a wall to begin with.
if (tr/v<^/>v</) {
my $o;
$o .= "\n" while s/.$/$o .= $&, ""/meg;
tr,/\\,\\/, for $o, $s;
$_ = $o;
}
If t...
MySQL: #126 - Incorrect key file for table
...
First of all, you should know that keys and indices are synonyms in MySQL. If you look at the documentation about the CREATE TABLE Syntax, you can read:
KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY can also be specified as ju...
Inserting string at position x of another string
...ing(position);
Edit: replaced .substr with .substring because .substr is now a legacy function (per https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substr)
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How to set the text color of TextView in code?
...etTextColor(getResources().getColor(R.color.errorColor));
This method is now deprecated in Android M. You can however use it from the contextCompat in the support library, as the example now shows.
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I keep getting “Uncaught SyntaxError: Unexpected token o”
...ve contains exact copy from this answer. Adding link from accepted answer now.
– Geoffrey Hale
Aug 5 '16 at 0:40
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