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The easiest way to transform collection to array?
...of the correct type. And in this case, honestly, I wouldn't care about one extra single empty array in my application. That's far below noise level.
– Andreas Dolk
Jul 21 '10 at 6:28
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When creating a service with sc.exe how to pass in context parameters?
...ss:
class MyService : ServiceBase
{
protected override void OnStart(string[] args)
{
}
}
I regis
What is the difference between List (of T) and Collection(of T)?
...s that it is returning a new instance. Note that for e.g. a Dictionary<string, List<string>> to return List<string> is just fine, since the dictionary's state only encapsulates the identities of the lists therein, rather than their contents.
– supercat
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How to define @Value as optional
...r example was @Value("${myValue:DEFAULT}").
You are not limited to plain strings as default values. You can use SPEL expressions, and a simple SPEL expression to return null is:
@Value("${myValue:#{null}}")
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Set opacity of background image without affecting child elements
... @mystrdat You're already downloading the image, this isn't an extra request.
– brad
Feb 22 '13 at 4:47
2
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Is it possible for a computer to “learn” a regular expression by user-provided examples?
...
Yes, it's certainly "possible"; Here's the pseudo-code:
string MakeRegexFromExamples(<listOfPosExamples>, <listOfNegExamples>)
{
if HasIntersection(<listOfPosExamples>, <listOfNegExamples>)
return <IntersectionError>
string regex = "";
...
Why can't Python find shared objects that are in directories in sys.path?
...D_LIBRARY_PATH
Use the first form if it's empty (equivalent to the empty string, or not present at all), and the second form if it isn't. Note the use of export.
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The entitlements specified…profile. (0xE8008016). Error iOS 4.2
... run the HealthKit "fit" app for iOS8 - there was an additional identifier string in the entitlements file. Removing it allowed the project to run after following other steps mentioned in this thread
– Alex Stone
Jul 17 '14 at 18:38
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Collections.emptyMap() vs new HashMap()
...e this, and does not allow null references:
public ResultSet executeQuery(String query, Map<String, Object> queryParameters);
If you have a query that doesn't take any parameters, it's certainly a bit wasteful to create a HashMap, which involves allocating an array, when you could just pass...
ASP MVC href to a controller/view
...y I do the following:
<a href="@Url.Action("Index", null, new { area = string.Empty, controller = "User" }, Request.Url.Scheme)">
<span>Clients</span>
</a>
The result would have http://localhost/10000 (or with whatever port you are using) to be appended to the URL str...