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Default value of function parameter
...rom a different .cpp file, you will be able to see the difference.
Specifically, suppose:
lib.h
int Add(int a, int b);
lib.cpp
int Add(int a, int b = 3) {
...
}
test.cpp
#include "lib.h"
int main() {
Add(4);
}
The compilation of test.cpp will not see the default parameter declarat...
std::function and std::bind: what are they, and when should they be used?
...
Also handy for callbacks to member functions: myThread=boost::thread(boost::bind(&MyClass::threadMain, this))
– rlduffy
Jul 9 '11 at 3:10
...
How do I make an HTTP request in Swift?
... add import PlaygroundSupport to your playground, as well as the following call:
PlaygroundPage.current.needsIndefiniteExecution = true
This will allow you to use asynchronous code in playgrounds.
share
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valueOf() vs. toString() in Javascript
...ght that the toString() method got invoked whenever a string conversion is called for, but apparently it is trumped by valueOf().
...
break out of if and foreach
...ot "break out of it".
You can, however, break out of the foreach by simply calling break. In your example it has the desired effect:
foreach($equipxml as $equip) {
$current_device = $equip->xpath("name");
if ( $current_device[0] == $device ) {
// found a match in the file ...
How can I create tests in Android Studio?
...ferent types of tests that you will do.
Local unit tests. These are run locally on the JVM (Java Virtual Machine). Since they are local, they are fast. You can use them to test the parts of your code that just need Java and not the Android APIs. (Sometimes you can make a fake API object to test mor...
from jquery $.ajax to angular $http
...
The AngularJS way of calling $http would look like:
$http({
url: "http://example.appspot.com/rest/app",
method: "POST",
data: {"foo":"bar"}
}).then(function successCallback(response) {
// this callback will be called asynchro...
Mongoose indexing in production code
...ndex in production. Once the index has been added, subsequent ensureIndex calls will simply see that the index already exists and then return. So it only has an effect on performance when you're first creating the index, and at that time the collections are often empty so creating an index would b...
Overriding class constants vs properties
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In PHP, self refers to the class in which the called method or property is defined. So in your case you're calling self in ChildClass, so it uses the variable from that class. Then you use self in ParentClass, so it wil then refer to the variable in that class.
if you s...
XmlWriter to Write to a String Instead of to a File
... the using() and instead declare your XmlWriter normally then make sure to call xw.Flush before you call sw.ToString() or else you may not get all content! (Obviously better to use the using brackets...)
– Ravendarksky
Jul 16 '14 at 10:34
...