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How to retrieve an element from a set without removing it?
...n't require copying the whole set:
for e in s:
break
# e is now an element from s
Or...
e = next(iter(s))
But in general, sets don't support indexing or slicing.
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What is the “right” way to iterate through an array in Ruby?
...en an array and a hash (maybe I'm naive, but this seems obviously right to me), and to iterate through either you just do
1...
Check for column name in a SqlDataReader object
...sts in a SqlDataReader object? In my data access layer, I have create a method that builds the same object for multiple stored procedures calls. One of the stored procedures has an additional column that is not used by the other stored procedures. I want to modified the method to accommodate fo...
Git command to show which specific files are ignored by .gitignore
...d files could be removed (without removing anything)
Also interesting (mentioned in qwertymk's answer), you can also use the git check-ignore -v command, at least on Unix (doesn't work in a CMD Windows session)
git check-ignore *
git check-ignore -v *
The second one displays the actual rule o...
How does StartCoroutine / yield return pattern really work in Unity?
...tCoroutine / yield return pattern to work in C# in Unity, e.g. invoke a method returning IEnumerator via StartCoroutine and in that method do something, do yield return new WaitForSeconds(1); to wait a second, then do something else.
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jQuery if checkbox is checked
...have a function below that I want to only trigger when a checkbox in the same tr is checked. Please tell me what I am doing wrong, the usual methods are not working. Thanks
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Using Caps Lock as Esc in Mac OS X
...ual walk-through answer (with links) of how to achieve this using Seil (formerly known as PCKeyboardHack).
First, go into the System Preferences, choose Keyboard, then the Keyboard Tab (first tab), and click Modifier Keys:
In the popup dialog set Caps Lock Key to No Action:
2) Now, click he...
List columns with indexes in PostgreSQL
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Create some test data...
create table test (a int, b int, c int, constraint pk_test primary key(a, b));
create table test2 (a int, b int, c int, constraint uk_test2 unique (b, c));
create table test3 (a int, b int, c int, constraint ...
Convert JSON String to JSON Object c#
...
JObject defines method Parse for this:
JObject json = JObject.Parse(str);
You might want to refer to Json.NET documentation.
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Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
...ooking at the MvcContrib Grid component and I'm fascinated, yet at the same time repulsed, by a syntactic trick used in the Grid syntax :
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