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How to check if an object is nullable?
...pe if boxed, but you can with generics:
- so how about below. This is actually testing type T, but using the obj parameter purely for generic type inference (to make it easy to call) - it would work almost identically without the obj param, though.
static bool IsNullable<T>(T obj)
{
if (...
T-SQL split string
...
Thanks a lot Andy. I made a small enhancement to your script to allow the function to return an item at a specific index in the split string. It is useful only in situations when you the structure of the column one is parsing. gist.github.com/klimaye/8147...
How to take screenshot of a div with JavaScript?
I am building something called the "HTML Quiz". It's completely ran on JavaScript and it's pretty cool.
10 Answers
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What does @@variable mean in Ruby?
...the classes; setting the value in an instance of one changes the value for all other instances of that class and even child classes, where a variable named @shared, with one @, would not be.
[Update]
As Phrogz mentions in the comments, it's a common idiom in Ruby to track class-level data with an ...
How can I find the first occurrence of a sub-string in a python string?
... knowledge: rfind and rindex:
In general, find and index return the smallest index where the passed-in string starts, and rfind and rindex return the largest index where it starts
Most of the string searching algorithms search from left to right, so functions starting with r indicate that the...
Unable to cast object of type 'System.DBNull' to type 'System.String`
...mber.ToString()
EDIT: Haven't paid attention to ExecuteScalar. It does really return null if the field is absent in the return result. So use instead:
return (accountNumber == null) ? string.Empty : accountNumber.ToString()
...
How to check if IEnumerable is null or empty?
... love string.IsNullOrEmpty method. I'd love to have something that would allow the same functionality for IEnumerable. Is there such? Maybe some collection helper class? The reason I am asking is that in if statements the code looks cluttered if the patter is (mylist != null && mylist.A...
Proper SCSS Asset Structure in Rails
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The problem with CSS is, you do not want to automatically add all files.
The order of which your sheets are loaded and processed by the browser is essential. So you will always end up explicitly importing all your css.
As an example, lets say you have a normalize.css sheet, t...
How to check if AlarmManager already has an alarm set?
...nother issue that was causing my problem. The intent I mentioned above actually does work :)
– toc777
Apr 12 '12 at 12:25
42
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Understanding NSRunLoop
... run loop directly, though there are some (networking) components that may allow you to specify which run loop they will use for I/O processing.
A run loop for a given thread will wait until one or more of its input sources has some data or event, then fire the appropriate input handler(s) to proce...