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Spring @PostConstruct vs. init-method attribute
Is there any difference between using the @PostConstruct annotation and declaring the same method as init-method in Spring XML configuration?
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C# List of objects, how do I get the sum of a property
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And if you need to do it on items that match a specific condition...
double total = myList.Where(item => item.Name == "Eggs").Sum(item => item.Amount);
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What does $NON-NLS-1$ mean?
...y silence a warning that Eclipse emits when it encounters string literals (and has been configured to complain).
The idea is that UI messages should not be embedded as string literals, but rather sourced from a resource file (so that they can be translated, proofed, etc). Consequently, Eclipse can ...
what is the difference between ?:, ?! and ?= in regex?
I searched for the meaning of these expressions but couldn't understand the exact difference between them.
This is what they say:
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How to make inline functions in C#
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{
Console.WriteLine("Hello world!");
}
Lambdas are new in C# 3.0 and come in two flavours.
Expression lambdas:
Func<int, int, int> add = (int x, int y) => x + y; // or...
Func<int, int, int> add = (x, y) => x + y; // types are inferred by the compiler
Statement lambda...
JavaScript plus sign in front of function expression
I’ve been looking for information about immediately invoked functions, and somewhere I stumbled on this notation:
3 Answe...
Use of 'use utf8;' gives me 'Wide character in print'
...se UTF8, then it will interpret those three bytes as your single character and that is what is displayed.
If we add in the utf8 module, things are different. In this case, Perl interprets your string as just two characters.
$ perl -Mutf8 -E 'say join ":", map { ord } split //, "鸡\n";'
40481:10
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How to check for the type of a template parameter?
Suppose I have a template function and two classes
4 Answers
4
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.rar, .zip files MIME Type
I'm developing a simple php upload script, and users can upload only ZIP and RAR files.
6 Answers
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What is a memory fence?
...are concept. In higher level languages we are used to dealing with mutexes and semaphores - these may well be implemented using memory fences at the low level and explicit use of memory barriers are not necessary. Use of memory barriers requires a careful study of the hardware architecture and more ...