大约有 7,000 项符合查询结果（耗时：0.0340秒） [XML]
Is it better in C++ to pass by value or pass by constant reference?
...pass-by-reference the compiler cannot assume that always. Simple example:
foo * f;
void bar(foo g) {
g.i = 10;
f->i = 2;
g.i += 5;
}
the compiler can optimize it into
g.i = 15;
f->i = 2;
since it knows that f and g doesn't share the same location. if g was a reference (foo &...
Using custom std::set comparator
... typedef std::set< T, ftor > t;
};
// usage
bool my_comparison( foo const &l, foo const &r );
set_funcomp< foo, my_comparison >::t boo; // just the way you want it!
Wow, I think that was worth the trouble!
...
SQLAlchemy: Creating vs. Reusing a Session
... db_session.close()
connection.close()
Usage:
from mymodels import Foo
with db_session("sqlite://") as db:
foos = db.query(Foo).all()
share
|
improve this answer
|
...
How to set custom location for local installation of npm package?
...o this by using the --prefix flag and the --global* flag.
pje@friendbear:~/foo $ npm install bower -g --prefix ./vendor/node_modules
bower@0.7.0 /Users/pje/foo/vendor/node_modules/bower
*Even though this is a "global" installation, installed bins won't be accessible through the command line unless ...
How do I get the n-th level parent of an element in jQuery?
...ermost element with 'container' class among parents
('#element').closest('#foo') // returns the closest parent with id 'foo'
share
|
improve this answer
|
follow
...
How to access java-classes in the default-package?
...ions API you can access any class so far. At least I was able to :)
Class fooClass = Class.forName("FooBar");
Method fooMethod = fooClass.getMethod("fooMethod", String.class);
String fooReturned = (String)fooMethod.invoke(fooClass.newInstance(), "I did it");
...
Where is Xcode's build folder?
...sly created in Xcode3, I see an intermediate directory under build/ called Foo.build where Foo is my project's name, and then in that are the directories you'd expect (Debug-iphonesimulator, Release-iphoneos, etc, assuming you've done a build of that type) containing the object files and products.
...
Node.js - use of module.exports as a constructor
...My module
function MyObject(bar) {
this.bar = bar;
}
MyObject.prototype.foo = function foo() {
console.log(this.bar);
};
module.exports = MyObject;
// In another module:
var MyObjectOrSomeCleverName = require("./my_object.js");
var my_obj_instance = new MyObjectOrSomeCleverName("foobar");
my_...
How to read lines of a file in Ruby
...
Ruby does have a method for this:
File.readlines('foo').each do |line|
http://ruby-doc.org/core-1.9.3/IO.html#method-c-readlines
share
|
improve this answer
|
...
Can I escape html special chars in javascript?
... it on a fresh element if you just want to convert like this: const str = "foo<>'\"&"; $('<div>').text(str).html() yields foo&lt;&gt;'"&amp;
– amoebe
Nov 14 '17 at 21:46
...