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Xcode doesn't show the line that causes a crash
Every time my app crashes Xcode highlights the UIApicationMain() call in the main() function as the line that caused the crash. In some cases that used to be normal (segmentation fault for example) but the crash I am trying to deal with is a simple SIGABRT with detailed information logged in the con...
How can I listen to the form submit event in javascript?
...rm Element*/;
if(ele.addEventListener){
ele.addEventListener("submit", callback, false); //Modern browsers
}else if(ele.attachEvent){
ele.attachEvent('onsubmit', callback); //Old IE
}
callback is a function that you want to call when the form is being submitted.
About EventTar...
What is the best way to deal with the NSDateFormatter locale “feechur”?
...t of the formatter and, in doing so, alter the format set by the code that called you, when it was in the middle of date formatting operations. There are other scenarios where the timezone must be changed repeatedly.
– Hot Licks
Mar 10 '15 at 11:32
...
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...
Using NumberPicker Widget with Strings
...
@ArulxZ If you haven't already figured this out, just call picker.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS); to prevent the keyboard from popping up.
– Karim Varela
Jun 1 '15 at 20:21
...
How can I generate UUID in C#
I am creating an .idl file programmatically. How do I create UUIDs for the interfaces and Methods Programmatically.
5 Answ...
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
...
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
...
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...