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Do you use NULL or 0 (zero) for pointers in C++?
In the early days of C++ when it was bolted on top of C, you could not use NULL as it was defined as (void*)0 . You could not assign NULL to any pointer other than void* , which made it kind of useless. Back in those days, it was accepted that you used 0 (zero) for null pointers.
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How to access array elements in a Django template?
I am getting an array arr passed to my Django template. I want to access individual elements of the array in the array (e.g. arr[0] , arr[1] ) etc. instead of looping through the whole array.
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Class Not Found Exception when running JUnit test
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This appears to occur because only the source code is compiling when you use mvn clean compile (I'm using maven 3.1.0 so I'm not sure if it always behaved like this).
If you run mvn test, the test code will compile as well, but then it ...
ASP.NET Identity's default Password Hasher - How does it work and is it secure?
....NET Identity Framework, is secure enough? And if so, if you could explain to me how it works?
4 Answers
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How can I use a file in a command and redirect output to the same file without truncating it?
Basically I want to take as input text from a file, remove a line from that file, and send the output back to the same file. Something along these lines if that makes it any clearer.
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How to check whether a string contains a substring in Ruby
...g" (with an uppercase D), include?("cde") would return false. You may want to do a downcase() before calling include?().
– phortx
Mar 25 '14 at 7:58
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How to take all but the last element in a sequence using LINQ?
...q solution - But you can easily code the algorithm by yourself using generators (yield return).
public static IEnumerable<T> TakeAllButLast<T>(this IEnumerable<T> source) {
var it = source.GetEnumerator();
bool hasRemainingItems = false;
bool isFirst = true;
T ite...
What regular expression will match valid international phone numbers?
I need to determine whether a phone number is valid before attempting to dial it. The phone call can go anywhere in the world.
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Android Lint contentDescription warning
...iption="@string/desc"
Android Lint support in ADT 16 throws this warning to ensure that image widgets provide a contentDescription.
This defines text that briefly describes content of the view. This property is used primarily for accessibility. Since some views do not have textual representation ...
form_for but to post to a different action
I want to have a form_for @user , but post to a custom action in the users controller.
6 Answers
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