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When should we use intern method of String on String literals
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String literals and constants are interned by default.
That is, "foo" == "foo" (declared by the String literals), but new String("foo") != new String("foo").
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Best way to extract a subvector from a vector?
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std::vector<T>(input_iterator, input_iterator), in your case foo = std::vector<T>(myVec.begin () + 100000, myVec.begin () + 150000);, see for example here
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Make .gitignore ignore everything except a few files
...ent answer, but It's worth noting for anyone coming across this later that foo and foo/* are not the same. For this to work, you need to use foo/* for the base folder
– thislooksfun
Jul 30 '16 at 16:13
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How to search file text for a pattern and replace it with a given value
...de into your programs.
Here's a quick short way to do it.
file_names = ['foo.txt', 'bar.txt']
file_names.each do |file_name|
text = File.read(file_name)
new_contents = text.gsub(/search_regexp/, "replacement string")
# To merely print the contents of the file, use:
puts new_contents
#...
How to import existing Git repository into another?
... to do that is to use git format-patch.
Assume we have 2 git repositories foo and bar.
foo contains:
foo.txt
.git
bar contains:
bar.txt
.git
and we want to end-up with foo containing the bar history and these files:
foo.txt
.git
foobar/bar.txt
So to do that:
1. create a temporary di...
How to create a file with a given size in Linux?
...lease, modern is easier, and faster. On Linux, (pick one)
truncate -s 10G foo
fallocate -l 5G bar
It needs to be stated that truncate on a file system supporting sparse files will create a sparse file and fallocate will not. A sparse file is one where the allocation units that make up the file ar...
How to get a path to a resource in a Java JAR file
...the difference between:
getClass().getClassLoader().getResource("com/myorg/foo.jpg") //relative path
and
getClass().getResource("/com/myorg/foo.jpg")); //note the slash at the beginning
I guess, this confusion is causing most of problems when loading a resource.
Also, when you're loading an image...
Start thread with member function
...clude <thread>
#include <iostream>
class bar {
public:
void foo() {
std::cout << "hello from member function" << std::endl;
}
};
int main()
{
std::thread t(&bar::foo, bar());
t.join();
}
EDIT:
Accounting your edit, you have to do it like this:
std::thre...
What is the difference between an expression and a statement in Python?
...ression is something that can be reduced to a value, for example "1+3" or "foo = 1+3".
It's easy to check:
print foo = 1+3
If it doesn't work, it's a statement, if it does, it's an expression.
Another statement could be:
class Foo(Bar): pass
as it cannot be reduced to a value.
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Why does calling a function in the Node.js REPL with )( work?
....} as Object literals/initialisers rather than as a block.
var stmt = '{ "foo": "bar" }';
var expr = '(' + stmt + ')';
console.log(eval(expr)); // Object {foo: "bar"}
console.log(eval(stmt)); // SyntaxError: Unexpected token :
And, as leesei mentioned, this has been changed for 0.11.x, which wil...