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How do I link to part of a page? (hash?)
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Note this is now obsolete in HTML5.
– Tim
Jun 12 '16 at 11:53
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Rails create or update magic?
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Oh... I see what you meant now - that both forms, find_or_initialize_by and find_or_create_by accept a block. I thought you meant that whether the record exists or not, a block will be passed down with the record object as an argument, in order to do t...
Indenting code in Sublime text 2?
...s-User contains exactly those lines and save that file. Also make sure ST knows which kind of filetype/syntax it should use (is your syntax highlighting correct?). If it still does not work try a different key (e.g. "f8" seems unused) then if that does not work either check whether user defined keyb...
Override devise registrations controller
...model, or any of the nested models?
If so, I believe the ActiveRecord::UnknownAttributeError is triggered in this instance.
Otherwise, I think you can just create your own controller, by generating something like this:
# app/controllers/registrations_controller.rb
class RegistrationsController &l...
MySQL: #126 - Incorrect key file for table
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First of all, you should know that keys and indices are synonyms in MySQL. If you look at the documentation about the CREATE TABLE Syntax, you can read:
KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY can also be specified as ju...
Check if a temporary table exists and delete if it exists before creating a temporary table
...olumn later, it will give an error saying "invalid column". Please let me know what I am doing wrong.
15 Answers
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Method call if not null in C#
...void SafeInvoke(this Action action) {
if(action != null) action();
}
now this is valid:
Action act = null;
act.SafeInvoke(); // does nothing
act = delegate {Console.WriteLine("hi");}
act.SafeInvoke(); // writes "hi"
In the case of events, this has the advantage of also removing the race-con...
Stop form refreshing page on submit
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Super old thread, but for anybody who comes across this now, please do not try action="#" because it does not work and is not an appropriate solution. The key is actually onsubmit="yourJsFunction();return false"
– Jeff
Nov 9 '19 at 21:04
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How can I show line numbers in Eclipse?
...I wrote this long ago but as @ArtOfWarfar and @voidstate mentioned you can now simply:
Right click the gutter and select "Show Line Numbers":
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Window appears off screen on ubuntu [closed]
...2.04 LTS
I have changed the positioning of the monitors several times, and now for some reason some of the windows open up off-screen (outside of both screens), Update Manager, for instance.
How can I position the windows on one of my screens?
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