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String replacement in Objective-C
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I thought the point of having NSString and an NSMutableString subclass was because an instance of NSString is unchangeable. While--like any sane person, I'd rather have ducks than strings any day--the fact that you just overwrote the contents of str just blew my m...
DefaultInlineConstraintResolver Error in WebAPI 2
I'm using Web API 2 and I'm getting the following error when I send a POST to my API method using IIS 7.5 on my local box.
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What's the best practice for primary keys in tables?
...signing tables, I've developed a habit of having one column that is unique and that I make the primary key. This is achieved in three ways depending on requirements:
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Meaning of acronym SSO in the context of std::string
In a C++ question about optimization and code style , several answers referred to "SSO" in the context of optimizing copies of std::string . What does SSO mean in that context?
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How do you detect Credit card type based on number?
...gy in some documents). These six digits are subject to an international standard, ISO/IEC 7812, and can be used to determine the type of card from the number.
Unfortunately the actual ISO/IEC 7812 database is not publicly available, however, there are unofficial lists, both commercial and free, in...
When should I use File.separator and when File.pathSeparator?
In the File class there are two strings, separator and pathSeparator .
3 Answers
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Why check both isset() and !empty()
Is there a difference between isset and !empty . If I do this double boolean check, is it correct this way or redundant? and is there a shorter way to do the same thing?
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Casting to string in JavaScript
...avaScript.
I searched for those three options in the jQuery source code, and they are all in use .
I would like to know if there are any differences between them:
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How can I pass command-line arguments to a Perl program?
I'm working on a Perl script. How can I pass command line parameters to it?
9 Answers
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How to convert / cast long to String?
...String class: String s = String.valueOf(date);
If your Long might be null and you don't want to get a 4-letter "null" string, you might use Objects.toString, like: String s = Objects.toString(date, null);
EDIT:
You reverse it using Long l = Long.valueOf(s); but in this direction you need to cat...