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独行冰海
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2.快速开发CSS的利器 - less 混入
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How do I add a foreign key to an existing SQLite table?
...d) references parent(id))'
) where name = 'child' and type = 'table';
--- test the foreign key
pragma foreign_keys=on;
insert into parent values(1);
insert into child values(1, 1, 'hi'); --- works
insert into child values(2, 2, 'bye'); --- fails, foreign key violation
or more generally:
pragma w...
Converting a Java Keystore into PEM Format
...keytool
keytool -exportcert -alias selfsigned -keypass password -keystore test-user.jks -rfc -file test-user.pem
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libpng warning: iCCP: known incorrect sRGB profile
... find . -type f -iname '*.png' -exec pngcrush -ow -rem allb -reduce {} \; (Tested on GNU/Linux)
– friederbluemle
Feb 16 '16 at 3:24
2
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When to favor ng-if vs. ng-show/ng-hide?
...ely noticable anyway and I am not sure yet on who's favour is it without a test...
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How do the major C# DI/IoC frameworks compare? [closed]
...
I came across another performance comparison(latest update 10 April 2014). It compares the following:
AutoFac
LightCore (site is German)
LinFu
Ninject
Petite
Simple Injector (the fastest of all contestants)
Spring.NET
StructureMap
Unity
Windsor
Hiro
Here is a quick sum...
HTML text input allow only numeric input
...ment.getElementById("myTextBox"), function(value) {
return /^\d*\.?\d*$/.test(value); // Allow digits and '.' only, using a RegExp
});
See the JSFiddle demo for more input filter examples. Also note that you still must do server side validation!
TypeScript
Here is a TypeScript version of this....
Using .NET, how can you find the mime type of a file based on the file signature not the extension
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I've been testing this code with IIS 7 and it hasn't been working for me. I have a CSV file that I'm testing. I've been changing the extension of the CSV (to .png, .jpeg, etc) and the mimetype changes with the extension (image/png, i...
Difference between `constexpr` and `const`
...change the values of their member (non-static) fields. For example.
class test
{
int x;
void function1()
{
x=100; // OK.
}
void function2() const
{
x=100; // ERROR. The const methods can't change the values of object fields.
}
};
A constexpr is a different conce...
Auto-center map with multiple markers in Google Maps API v3
...ultiformeIngegno Calling it right after fitBounds worked for me in a brief test; let me know if you're still having trouble.
– metadept
Mar 30 '13 at 15:35
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