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How do I drop a foreign key constraint only if it exists in sql server?
...gn_keys
WHERE object_id = OBJECT_ID(N'dbo.FK_TableName_TableName2')
AND parent_object_id = OBJECT_ID(N'dbo.TableName')
)
ALTER TABLE [dbo.TableName] DROP CONSTRAINT [FK_TableName_TableName2]
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Good Hash Function for Strings
I'm trying to think up a good hash function for strings. And I was thinking it might be a good idea to sum up the unicode values for the first five characters in the string (assuming it has five, otherwise stop where it ends). Would that be a good idea, or is it a bad one?
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Is there an equivalent to 'continue' in a Parallel.ForEach?
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When you converted your loop into a compatible definition for the Parallel.Foreach logic, you ended up making the statement body a lambda. Well, that is an action that gets called by the Parallel function.
So, replace continue with r...
How to split a file into equal parts, without breaking individual lines? [duplicate]
...equal except for the last), without breaking the line? Using the split command in Unix, lines may be broken in half. Is there a way to, say, split up a file in 5 equal parts, but have it still only consist of whole lines (it's no problem if one of the files is a little larger or smaller)? I know I c...
How to check for an undefined or null variable in JavaScript?
... property doesn't yield an error and simply returns undefined, which, when converted to a boolean, evaluates to false. So, if you don't care about
0 and false, using if(obj.undefProp) is ok. There's a common idiom based on this fact:
value = obj.prop || defaultValue
which means "if obj has the p...
Is “ ” a replacement of “ ”?
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Is there any change to convert these numeric entity referenece into the character enitiy reference?
– user2140111
Sep 4 '15 at 10:41
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Why implement interface explicitly?
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If you implement two interfaces, both with the same method and different implementations, then you have to implement explicitly.
public interface IDoItFast
{
void Go();
}
public interface IDoItSlow
{
void Go();
}
public class JustDoIt : IDoItFast, IDoItSlow
{
void IDoItF...
Java: Static vs inner class [duplicate]
What is the difference between static and non-static nested class?
8 Answers
8
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How to iterate over the keys and values with ng-repeat in AngularJS?
...t, I don't recommend iterating over keys in objects. It would be better to convert it to an array in your controller. Assuming there isn't idiomatic way to do this based on your business model, ES6 makes it very easy: Object.getOwnPropertyNames(data).map(k => ({key:k, value:data[k]));.
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How to get the current time as datetime
...components.minute
See the same question in objective-c How do I get hour and minutes from NSDate?
Compared to Nate’s answer, you’ll get numbers with this one, not strings… pick your choice!
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