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How to set commands output as a variable in a batch file
...
FOR /F "tokens=* USEBACKQ" %%F IN (`command`) DO (
SET var=%%F
)
ECHO %var%
I always use the USEBACKQ so that if you have a string to insert or a long file name, you can use your double quotes without screwing up the command.
Now if your output will contain multiple l...
Java Generics: Cannot cast List to List? [duplicate]
...));
DataNode node = a1.get(0);
What would you expect to happen?
You can do this:
List<DataNode> a1 = new ArrayList<DataNode>();
List<? extends Tree> b1 = a1;
... because then you can only fetch things from b1, and they're guaranteed to be compatible with Tree. You can't call ...
CSS: How do I auto-resize an image to fit a 'div' container?
How do you auto-resize a large image so that it will fit into a smaller width div container whilst maintaining its width:height ratio?
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How to do case insensitive search in Vim
...ttern. For example:
/\ccopyright or /copyright\c or even /copyri\cght
To do the inverse (case sensitive matching), use \C (capital C) instead.
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Assign variable in if condition statement, good practice or not? [closed]
...example, when you see this:
if (value = someFunction()) {
...
}
you don't know if that's what they meant to do, or if they intended to write this:
if (value == someFunction()) {
...
}
If you really want to do the assignment in place, I would recommend doing an explicit comparison as we...
Can I call a constructor from another constructor (do constructor chaining) in C++?
...o(int y) : Foo('a', y) {}
};
C++03: No
Unfortunately, there's no way to do this in C++03, but there are two ways of simulating this:
You can combine two (or more) constructors via default parameters:
class Foo {
public:
Foo(char x, int y=0); // combines two constructors (char) and (char, in...
Do I really have a car in my garage? [duplicate]
...AfterYears on a Vehicle without caring about the implementation.
Usually, downcasting is a sign of a flawed design: do not store your vehicles all together if you need to differenciate their actual type.
Note: of course the design here can be easily improved. It is just an example to demonstrate t...
How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?
...0] but I want to update it to the latest patch level using rvm. How can I do this?
8 Answers
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How to explain callbacks in plain english? How are they different from calling one function from ano
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I do not understand this answer. Can it be more about explaining than the code ?
– Abhishek Singh
Oct 16 '15 at 9:13
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Should developers have administrator permissions on their PC
...sks integral to development work that require administration privileges to do.
Bearing in mind that development staff do not necessarily have root access to production systems, admin rights on a local PC does not significantly compromise security of production systems. There is almost no legitimat...