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How do you do a limit query in JPQL or HQL?
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I like this one best because setFirstResult is actually mentioned in this answer whereas here and elsewhere they just say setMaxResults this and setMaxResults that without mentioning how to set the offset.
– demongo...
Qt: *.pro vs *.pri
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There is one main difference between their targetted reuse:
.pro
This is usually called Project File.
.pri
This is usually called Project Include File.
As you can see in their names, the main difference is that .pri files are meant to...
Test if a command outputs an empty string
...es. Those examples always report that there are files even when there are none.
For that reason you should use just ls -A - Why would anyone want to use the -l switch which means "use a long listing format" when all you want is test if there is any output or not, anyway?
So most of the answers her...
Where can I find the TypeScript version installed in Visual Studio?
...veral major releases of Typescript, but About window shows only the latest one.
Here is how to get to the bottom of it:
A. To check which versions of Typescript are installed with your Visual Studio/MSBuild, inspect contents of C:\Program Files (x86)\Microsoft SDKs\TypeScript folder. For example...
Why are unnamed namespaces used and what are their benefits?
...th the same name is defined elsewhere there will not be a violation of the One Definition Rule (ODR).
This is the same as the C way of having a static global variable or static function but it can be used for class definitions as well (and should be used rather than static in C++).
All anonymous n...
Serializing object that contains cyclic object value
...ther comments, this code removes every "seen" object, not only "recursive" ones.
For example, for:
a = {x:1};
obj = [a, a];
the result will be incorrect. If your structure is like this, you might want to use Crockford's decycle or this (simpler) function which just replaces recursive references...
What's a standard way to do a no-op in python?
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As a one-liner, i use doSQL = lambda *x:x.
– Cees Timmerman
Jan 30 '14 at 11:09
2
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Rails migrations: self.up and self.down versus change
...le and remove it on down. Much less code and it’s a profit.
On Rails 4: one more useful way to write what we need in one place:
def change
add_column :users, :location, :string
reversible do |direction|
direction.up { User.update_all(location: 'Minsk') }
end
end
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Nginx not picking up site in sites-enabled?
...nk at all. For example, if your link doesn't start with ../ to traverse up one directory, then enter sites-available. If you can cat the symlink and get output, Nginx should read it also as @Hannes said. Using an absolute path simply makes an incorrect path much more difficult to do.
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PHP: Count a stdClass object
...on't always work but being a simple stdClass object it should get the job done here.
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