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How to check if a symlink exists
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Yes, -L and -h are the same. man test also confirms this.
– Sparhawk
Feb 9 '15 at 1:20
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Swift: Pass array by reference?
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Something like
var a : Int[] = []
func test(inout b : Int[]) {
b += [1,2,3,4,5]
}
test(&a)
println(a)
???
share
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What's the difference between the build and create methods in FactoryGirl?
...method only when persistence is really necessary since writing to DB makes testing time consuming.
e.g.
I create users to authentication with create() because my authentication engine queries the DB.
To check if a model has an attribute the build() method will do because no DB access is required...
How can I get the line number which threw exception?
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You get something similar to: System.Exception: Test at Tests.Controllers.HomeController.About() in c:\Users\MatthewB\Documents\Visual Studio 2013\Projects\Tests\Tests\Controllers\HomeController.cs:line 22
– Professor of programming
D...
Bash empty array expansion with `set -u`
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I don't see you testing "${arr[@]}". Am I missing something? From what I can see it works at least in 5.x.
– x-yuri
May 9 at 17:49
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How to convert DateTime to VarChar
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With Microsoft Sql Server:
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-- Create test case
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DECLARE @myDateTime DATETIME
SET @myDateTime = '2008-05-03'
--
-- Convert string
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SELECT LEFT(CONVERT(VARCHAR, @myDateTime, 120), 10)
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How to check 'undefined' value in jQuery
...ks because val always exists (it's a function argument).
If you wanted to test an arbitrary variable that is not an argument, i.e. might not be defined at all, you'd have to use if(typeof val === 'undefined') to avoid an exception in case val didn't exist.
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How do I properly escape quotes inside HTML attributes?
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" is the correct way, the third of your tests:
<option value="&quot;asd">test</option>
You can see this working below, or on jsFiddle.
alert($("option")[0].value);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.mi...
How to efficiently compare two unordered lists (not sets) in Python?
...e was a more efficient method and clearly I drew a blank. After extensive testing in python 3 with the timeit module, sorted consistently comes out faster on lists of integers. On lists of, 1k items, about 1.5% slower and on short lists, 10 items, 7.5% slower. Thoughts?
– a...
Detect application heap size in Android
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This distinction is not clearly documented, so far as I know, but I have tested this hypothesis on five different Android devices (see below) and have confirmed to my own satisfaction that this is a correct interpretation.
For a stock version of Android, maxMemory() will typically return about th...