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Check that an email address is valid on iOS [duplicate]
I am developing an iPhone application where I need the user to give his email address at login.
4 Answers
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Is putting a div inside an anchor ever correct?
I've heard that putting a block element inside a inline element is a HTML sin:
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typedef struct vs struct definitions [duplicate]
I'm a beginner in C programming, but I was wondering what's the difference between using typedef when defining a structure versus not using typedef . It seems to me like there's really no difference, they accomplish the same goal.
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Why are const parameters not allowed in C#?
It looks strange especially for C++ developers. In C++ we used to mark a parameter as const in order to be sure that its state will not be changed in the method. There are also other C++ specific reasons, like passing const ref in order to pass by ref and be sure that state will not be changed. ...
When should I use the HashSet type?
I am exploring the HashSet<T> type, but I don't understand where it stands in collections.
11 Answers
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Why does Python code use len() function instead of a length method?
I know that python has a len() function that is used to determine the size of a string, but I was wondering why it's not a method of the string object.
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When should null values of Boolean be used?
Java boolean allows values of true and false while Boolean allows true , false , and null . I have started to convert my boolean s to Boolean s. This can cause crashes in tests such as
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What is the difference between a pseudo-class and a pseudo-element in CSS?
Things like a:link or div::after ...
8 Answers
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Is it fine to have foreign key as primary key?
I have two tables:
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How and why do I set up a C# build machine? [closed]
I'm working with a small (4 person) development team on a C# project. I've proposed setting up a build machine which will do nightly builds and tests of the project, because I understand that this is a Good Thing. Trouble is, we don't have a whole lot of budget here, so I have to justify the expen...