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How to convert int[] to Integer[] in Java?
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With Java 8, int[] can be converted to Integer[] easily:
int[] data = {1,2,3,4,5,6,7,8,9,10};
// To boxed array
Integer[] what = Arrays.stream( data ).boxed().toArray( Integer[]::new );
Integer[] ever = IntStream.of( data ).boxed().toArray( Integer[]::new );
// To boxed list
List<Integer> ...
How can I calculate the time between 2 Dates in typescript
...70-01-01, and subtract those:
var time = new Date().getTime() - new Date("2013-02-20T12:01:04.753Z").getTime();
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Should commit messages be written in present or past tense? [closed]
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12 Answers
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'printf' vs. 'cout' in C++
...e when you print many arguments. If you have to write something like Error 2: File not found., assuming error number, and its description is placeholder, the code would look like this. Both examples work identically (well, sort of, std::endl actually flushes the buffer).
printf("Error %d: %s.\n", i...
How do I get an empty array of any size in python?
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241
If by "array" you actually mean a Python list, you can use
a = [0] * 10
or
a = [None] * 10...
Determine the number of NA values in a column
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321
You're over-thinking the problem:
sum(is.na(df$col))
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How to determine function name from inside a function
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238
You can use ${FUNCNAME[0]} in bash to get the function name.
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PHP ORMs: Doctrine vs. Propel
...ria):
<?php
// Propel
$c = new Criteria();
$c->add(ExamplePeer::ID, 20);
$items = ExamplePeer::doSelectJoinFoobar($c);
// Doctrine
$items = Doctrine_Query::create()
->from('Example e')
->leftJoin('e.Foobar')
->where('e.id = ?', 20)
->execute();
?>
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What is the best practice for “Copy Local” and with project references?
...faultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
... snip ...
</ItemGroup>
<Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
<Import Project="[relative path to Common.targets]" />
<!-- To modif...
Rails 3 migrations: Adding reference column?
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205
If you are using the Rails 4.x you can now generate migrations with references, like this:
ra...