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Is main() really start of a C++ program?
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No, C++ does a lot of things to "set the environment" prior to the call of main; however, main is the official start of the "user specified" part of the C++ program.
Some of the environment setup is not controllable (like the initial code to set up std::cout; however, some of the environmen...
JavaScript variable number of arguments to function
...nowing this, and that the method concat returns a copy of the 'array' it's called on, we can easily convert the arguments object to a real array like this: var args = [].concat.call(arguments). Some people prefer to use Array.prototype.concat.call instead, but I like the [], they are short and sweet...
Best way to compare two complex objects
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Implement IEquatable<T> (typically in conjunction with overriding the inherited Object.Equals and Object.GetHashCode methods) on all your custom types. In the case of composite types, invoke the contained types’ Equals method within the containing type...
Difference between app.all('*') and app.use('/')
...in middleware will be more important than it is right now, since you technically don't even have to use it right now).
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How can I alter a primary key constraint using SQL syntax?
...nstraint name: ALTER TABLE db.table DROP PRIMARY KEY, ADD PRIMARY KEY (id1, id2);
– karsten314159
Dec 13 '18 at 12:24
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How do I write the 'cd' command in a makefile?
...tuff, should the cd fail for whatever reason.
A common usage though is to call make in the sub directory, which you might want to look into. There's a command line option for this so you don't have to call cd yourself, so your rule would look like this
all:
$(MAKE) -C some_dir all
which ...
IE9 jQuery AJAX with CORS returns “Access is denied”
...y by $.ajax to perform requests. Therefore, I assume you should be able to call $.ajax as usual. Information on transporters and extending $.ajax can be found here.
Also, a perhaps better version of this plugin can be found here.
Two other notes:
The object XDomainRequest was introduced from IE...
Creating an instance using the class name and calling constructor
...hen use getConstructor() to find the desired Constructor object.
Finally, call newInstance() on that object to get your new instance.
Class<?> c = Class.forName("mypackage.MyClass");
Constructor<?> cons = c.getConstructor(String.class);
Object object = cons.newInstance("MyAttributeValu...
JavaScript, Node.js: is Array.forEach asynchronous?
...ementation of JavaScript: Does it behave asynchronously?
For example, if I call:
10 Answers
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Need to handle uncaught exception and send log file
...ackTrace(); // not all Android versions will print the stack trace automatically
Intent intent = new Intent ();
intent.setAction ("com.mydomain.SEND_LOG"); // see step 5.
intent.setFlags (Intent.FLAG_ACTIVITY_NEW_TASK); // required when starting from Application
startActivity (inten...