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When to use lambda, when to use Proc.new?
In Ruby 1.8, there are subtle differences between proc/lambda on the one hand, and Proc.new on the other.
14 Answers
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Difference between “git checkout ” and “git checkout -- ”
...er what it looks like." This is not Git-specific, it's a general Unix command line convention. Normally you use it to clarify that an argument is a file name rather than an option, e.g.
rm -f # does nothing
rm -- -f # deletes a file named "-f"
git checkout1 also takes -- to mean that sub...
Can I convert a C# string value to an escaped string literal
...point in reinventing stuff that .net can do for us
– Andy Morris
Jan 19 '10 at 13:58
17
Nice one,...
When should I make explicit use of the `this` pointer?
...re is a name ambiguity, where it can be used to disambiguate class members and local variables. However, here is a completely different case where this-> is explicitly required.
Consider the following code:
template<class T>
struct A {
int i;
};
template<class T>
struct B : A&lt...
std::vector versus std::array in C++
What are the difference between a std::vector and an std::array in C++? When should one be preferred over another? What are the pros and cons of each? All my textbook does is list how they are the same.
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How do I find the PublicKeyToken for a particular dll?
...e("c:\MyDLL.dll")).FullName
The output will provide the Version, Culture and PublicKeyToken as shown below:
MyDLL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a
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Unable to cast object of type 'System.DBNull' to type 'System.String`
...hat column, the return value is System.DBNull.
– Alexander
May 27 '14 at 7:52
In the first case @Alexander mentions -n...
Convert a List into an ObservableCollection
... postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
Create timestamp variable in bash script
...ittle easier. I want to create the variable at the beginning of the script and have it print out the current time whenever I issue echo $timestamp . It proving to be more difficult then I thought. Here are some things I've tried:
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What is the difference between require() and library()?
What is the difference between require() and library() ?
8 Answers
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