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What is boxing and unboxing and what are the trade offs?
...erics are only used for compile-time type checking, .NET will generate specific classes for each generic type instantiated at run time.
Java and Haskell have unboxed arrays, but they're distinctly less convenient than the other collections. However, when peak performance is needed it's worth a lit...
How do I turn a String into a InputStreamReader in java?
...pending on the default platform encoding and characters in the string. Specifying a Unicode encoding for both encoding and decoding operations would be better. Read this for more details: illegalargumentexception.blogspot.com/2009/05/…
– McDowell
Aug 11 '09 a...
How do ACID and database transactions work?
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ACID is a set of properties that you would like to apply when modifying a database.
Atomicity
Consistency
Isolation
Durability
A transaction is a set of related changes which is used to achieve some of the ACID properties. Transactions are tools to achieve the ACID properties.
Atomici...
Cannot create an NSPersistentStoreCoordinator with a nil model
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first verify:
NSLog(@"%@", [self managedObjectModel]);
If you get a nil value maybe the problem is here
NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"RugbyOnTv" withExtension:@"momd"];
So, try changing @"momd" by @"m...
How to turn NaN from parseInt into 0 for an empty string?
...s, the logical OR (||) operator returns the first expression (parseInt(s)) if it can be evaluated to true, otherwise it returns the second expression (0). The return value of parseInt('') is NaN. NaN evaluates to false, so num ends up being set to 0.
...
Remove warning messages in PHP
...s still happening. Errors make PHP slow down so it's best to fix the error if at all possible. Using @ even slows down the code when there is not an error. vega.rd.no/articles/php-performance-error-suppression
– dprevite
Jan 1 '10 at 2:31
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What are the primary differences between Haskell and F#? [closed]
...skell but haven't found anything really definitive. What are the primary differences and why would I want to choose one over the other?
...
How do you check “if not null” with Eloquent?
How do you check if a field is not null with Eloquent?
7 Answers
7
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How do you create a toggle button?
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The good semantic way would be to use a checkbox, and then style it in different ways if it is checked or not. But there are no good ways do to it. You have to add extra span, extra div, and, for a really nice look, add some javascript.
So the best solution is to use a small jQuery function and ...
MySQL remove all whitespaces from the entire column
Is there a way to remove all whitespaces from a specific column for all values?
5 Answers
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