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postgresql - add boolean column to table set default
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Note that if your table is big this can take a long time and lock the table for the entire time. It's faster to split it into steps: add the column without a default with ALTER TABLE users ADD COLUMN priv_user BOOLEAN;, then UPDATE users SET priv_user = 'f'; and finally if you need...
What is the difference between :focus and :active?
What is the difference between the :focus and :active pseudo-classes?
7 Answers
7
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Swift: Testing optionals for nil
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For those who are new to swift as I am and are wondering: You still have to unwrap xyz inside the if block. It's safe though, even if you force unwrap
– Omar
Jun 10 '19 at 1:05
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PHP - Get bool to echo false when false
...ed Feb 9 '11 at 18:05
Dan GrossmanDan Grossman
48.1k1010 gold badges100100 silver badges9494 bronze badges
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Modulo operator with negative values [duplicate]
...rom ISO14882:2011(e) 5.6-4:
The binary / operator yields the quotient, and the binary % operator
yields the remainder from the division of the first expression by the
second. If the second operand of / or % is zero the behavior is
undefined. For integral operands the / operator yields the ...
SVN: Folder already under version control but not comitting?
svn stat says its not under version control, so I try to add it, and then it tells me it is. When I do an svn ci , it doesn't get comitted, and doesn't show up when I try to browse to repository online.
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How to make a promise from setTimeout
This is not a realworld problem, I'm just trying to understand how promises are created.
2 Answers
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Switch statement for string matching in JavaScript
...you don't want to compare in your match, you don't need a substring match, and could do:
switch (base_url_string) {
case "xxx.local":
// Blah
break;
case "xxx.dev.yyy.com":
// Blah
break;
}
...but again, that only works if that's the complete string you're ...
How to remove duplicate values from an array in PHP
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+1 array_unique returns an object with key and value pairs AND array_values return only values as an array.
– narainsagar
Sep 21 '18 at 17:16
a...
How to use LocalBroadcastManager?
How to use/locate LocalBroadcastManager as described in google docs and Service broadcast doc ?
12 Answers
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