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How can I programmatically get the MAC address of an iphone
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What is the best way to test for an empty string in Go?
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How to convert Nonetype to int or string?
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Ruby replace string with captured regex pattern
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193
Try '\1' for the replacement (single quotes are important, otherwise you need to escape the \)...
How to write a Ruby switch statement (case…when) with regex and backreferences?
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152
The references to the latest regex matching groups are always stored in pseudo variables $1 to...
SQL how to increase or decrease one for a int column in one command
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To answer the first:
UPDATE Orders SET Quantity = Quantity + 1 WHERE ...
To answer the second:
There are several ways to do this. Since you did not specify a database, I will assume MySQL.
INSERT INTO table SET x=1, y=2 ON DUPLICATE KEY UPDATE x=x+1, y=y+2
REPLACE INTO table SET ...
Base64 Decoding in iOS 7+
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edited Jun 1 '18 at 12:08
Cœur
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How is this fibonacci-function memoized?
...is asked for again. If we define some list, xs=[0..] and later ask for its 100th element, xs!!99, the 100th slot in the list gets "fleshed out", holding the number 99 now, ready for next access.
That is what that trick, "going-through-a-list", is exploiting. In normal doubly-recursve Fibonacci def...
PHP code to remove everything but numbers
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Try this:
preg_replace('/[^0-9]/', '', '604-619-5135');
preg_replace uses PCREs which general...
How to get current time in milliseconds in PHP?
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