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Test whether string is a valid integer
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An error occurred while installing pg (0.17.1), and Bundler cannot continue
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What is the best way to test for an empty string in Go?
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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 ...
PHP regular expressions: No ending delimiter '^' found in
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PHP regex strings need delimiters. Try:
$numpattern="/^([0-9]+)$/";
Also, note that you hav...
How do I apply a perspective transform to a UIView?
...veTransform = CATransform3DIdentity;
rotationAndPerspectiveTransform.m34 = 1.0 / -500;
rotationAndPerspectiveTransform = CATransform3DRotate(rotationAndPerspectiveTransform, 45.0f * M_PI / 180.0f, 0.0f, 1.0f, 0.0f);
layer.transform = rotationAndPerspectiveTransform;
Swift 5.0
if let myView = self...
This project references NuGet package(s) that are missing on this computer
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Extracting Nupkg files using command line
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You can also use the NuGet command line, by specifying a local host as part of an install. For...
How do i put a border on my grid in WPF?
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If you just want an outer border, the easiest way is to put it in a Border control:
<Border...