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Difference between `constexpr` and `const`
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Basic meaning and syntax
Both keywords can be used in the declaration of objects as well as functions. The basic difference when applied to objects is this:
const declares an object as constant. This implies a guarantee that once initialized, the value of th...
Difference between IsNullOrEmpty and IsNullOrWhiteSpace in C# [duplicate]
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Source: MSDN
IsNullOrWhiteSpace is a convenience method that is similar to the
following code, except that it offers superior performance:
return String.IsNullOrEmpty(value) || value.Trim().Length == 0;
White-space characters are defin...
What is the difference between :focus and :active?
...ts the state when the element is currently being activated by the user.
For example let's say we have a <button>. The <button> will not have any state to begin with. It just exists. If we use Tab to give "focus" to the <button>, it now enters its :focus state. If you then click (...
Finding all possible combinations of numbers to reach a given sum
...ll possible sums filtering out those that reach the target. Here is the algorithm in Python:
def subset_sum(numbers, target, partial=[]):
s = sum(partial)
# check if the partial sum is equals to target
if s == target:
print "sum(%s)=%s" % (partial, target)
if s >= targe...
What is the difference between aggregation, composition and dependency? [duplicate]
...d Room (child). Rooms don't exist separate to a House.
The above two are forms of containment (hence the parent-child relationships).
Dependency is a weaker form of relationship and in code terms indicates that a class uses another by parameter or return type.
Dependency is a form of association....
What is a thread exit code?
...xactly is a thread exit code in the Output window while debugging? What information it gives me? Is it somehow useful or just an internal stuff which should not bother me?
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How to determine if a decimal/double is an integer?
How do I tell if a decimal or double value is an integer?
14 Answers
14
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Why should I use var instead of a type? [duplicate]
...alled ReSharper it demands(by warnings) that I use var whenever possible, for example
4 Answers
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How to remove duplicate white spaces in string using Java?
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Like this:
yourString = yourString.replaceAll("\\s+", " ");
For example
System.out.println("lorem ipsum dolor \n sit.".replaceAll("\\s+", " "));
outputs
lorem ipsum dolor sit.
What does that \s+ mean?
\s+ is a regular expression. \s matches a space, tab, new line, carriage ...
List all developers on a project in Git
...sers & emails, and the number of commits in the CURRENT branch:
git shortlog --summary --numbered --email
Or simply:
git shortlog -sne
To show users from all branches (not only the ones in the current branch) you have to add --all flag:
git shortlog -sne --all
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