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Groovy: what's the purpose of “def” in “def x = 0”?
...syntactic sugar to make quick and dirty scripts quicker to type out (often one liners).
Good practice in larger scripts is to always use the "def" keyword so you don't run into strange scoping issues or interfere with variables you don't intend to.
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What is the Invariant Culture?
... is useful because it will not change. The current culture can change from one user to another, or even from one run to another, so you can't rely on it staying the same.
Being able to use the same culture each time is very important in several flows, for example, serialization: you can have 1,1 va...
Send attachments with PHP Mail()?
...o_attach , 'NameOfFile.pdf' );
return $email->Send();
It's just that one line $email->AddAttachment(); -- you couldn't ask for any easier.
If you do it with PHP's mail() function, you'll be writing stacks of code, and you'll probably have lots of really difficult to find bugs.
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Eclipse error: “The import XXX cannot be resolved”
...lved the problem also for me; it is not an hibernate project, but a libGdx one, calling my java imports and not jars. Same wondering of @SabreRunner, and also: there is a bug somewhere in the environment tools?
– Zac
Jul 19 '14 at 10:00
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SQLite: How do I save the result of a query as a CSV file?
...is. Although my query worked perfectly, the file output is empty. Does someone knows why?
– Valeria Lobos Ossandón
Oct 22 '18 at 13:44
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Can I target all tags with a single selector?
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The new :is() CSS pseudo-class can do it in one selector:
:is(h1, h2, h3, h4, h5, h6) {
color: red;
}
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MySQL: determine which database is selected?
... @DigitalPrecision It is a holdover from the fact that I've done a lot of work with Oracle. Oracle does not allow you to select unless it is from something, so there is a special table called "DUAL" which has only one cell in it. You can omit it.
– cwallenpoole
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Fast Bitmap Blur For Android SDK
...ou might try shrinking the image and then enlarging it again. This can be done with Bitmap.createScaledBitmap(Bitmap src, int dstWidth, int dstHeight, boolean filter). Make sure and set the filter parameter to true. It'll run in native code so it might be faster.
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Catch an exception thrown by an async void method
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You will notice that the Run method completes on thread 2820 while only one child thread has finished (2756). If you put a try/catch around your await method you can "catch" the exception in the usual way although your code is executed on another thread when the calculation task has finished and ...
How I can I lazily read multiple JSON values from a file/stream in Python?
I'd like to read multiple JSON objects from a file/stream in Python, one at a time. Unfortunately json.load() just .read() s until end-of-file; there doesn't seem to be any way to use it to read a single object or to lazily iterate over the objects.
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