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How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
...they won't match the regexp).
If you want zeros instead of not selecting, then a CASE statement should work:
SELECT CASE WHEN myfield~E'^\\d+$' THEN myfield::integer ELSE 0 END FROM mytable;
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Visual Studio popup: “the operation could not be completed”
...terwards.
Just to stay on the safe way, you can rename the .suo file, and then retry to start the solution, to see if this help.
In my experience sometime VS crash on start because there is an error in some source code, and due to that error VS can't compile the code, and then crash because withou...
Change Git repository directory location.
...esolve this simply click on the blue circle with the !, select Find It and then browse to the new directory.
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Are there any Java method ordering conventions? [closed]
...
Some conventions list all the public methods first, and then all the private ones - that means it's easy to separate the API from the implementation, even when there's no interface involved, if you see what I mean.
Another idea is to group related methods together - this makes it...
How to avoid passing parameters everywhere in play2?
... method in your controller:
implicit val menu: Seq[Menu] = Menu.findAll
Then in your actions you’ll be able to just write the following:
def index = Action {
Ok(views.html.index())
}
def index2 = Action {
Ok(views.html.index2())
}
You can find more information about this approach in thi...
Node.js version on the command line? (not the REPL)
...
Or
node --version
Note:
If node -v doesn't work, but nodejs -v does, then something's not set up quite right on your system. See this other question for ways to fix it.
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What is the difference between Normalize.css and Reset CSS?
...you're actually writing less code. If you do want to zero out some values, then that style is coupled to the element it is meant for and should ease debugging.
– necolas
Dec 17 '11 at 11:17
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When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
...static_cast (though ignoring access restrictions)
static_cast (see above), then const_cast
reinterpret_cast
reinterpret_cast, then const_cast
It can therefore be used as a replacement for other casts in some instances, but can be extremely dangerous because of the ability to devolve into a reinter...
Redefining NULL
... not sufficient to simply change the definition of NULL itself however, as then NULL would evaluate to true.
Specifically, you would need to:
Arrange for literal zeros in assignments to pointers (or casts to pointers) to be converted into some other magic value such as -1.
Arrange for equality te...
Crop MP3 to first 30 seconds
...extract 30 second audio from 15 second input file, it means if file grater then 30 second then extract 30 second but if file 15 second then repeat and extract complete 30 second.
– Girish Patidar
Jan 11 '16 at 10:01
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