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Debugging automatic properties
... Briliant. Thanks. I don't need to change automatic properties to standard one (with field) anymore. And no more recompilation:)
– Marek Kwiendacz
Jul 16 '11 at 22:24
9
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Sending a message to nil in Objective-C
...x:i]; This will also return 0, but since objectAtIndex: returns a pointer, and a pointer to 0 is nil/NULL, NSLog will be passed nil each time through the loop. (Although NSLog is a function and not a method, it prints out (null) if passed a nil NSString.
In some cases it's nicer to have a NullPoint...
How would you compare jQuery objects?
...hare identical nodes. Here is a small code snippet. You may even want to convert this into a jquery plugin for your own uses.
jQuery(function($) {
// Two separate jQuery references
var divs = $("div");
var divs2 = $("div");
// They are equal
if (divs.length == divs2.length && d...
Calling startActivity() from outside of an Activity?
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if your android version is below Android - 6 then you need to add this line otherwise it will work above Android - 6.
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Intent i = new Intent(this, Wakeup.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
...
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What is the difference between call and apply?
...u need to change the value of this for the function call. An example (that convert a functions arguments-object to an array): Array.prototype.slice.call(arguments) or [].slice.call(arguments). apply makes sense if you have the arguments in an array, for example in a function that calls another funct...
Double vs. BigDecimal?
...es store values as binary and therefore might introduce an error solely by converting a decimal number to a binary number, without even doing any arithmetic.
Decimal numbers (like BigDecimal), on the other hand, store each decimal digit as is. This means that a decimal type is not more precise than...
How to toggle a boolean?
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If you don't mind the boolean being converted to a number (that is either 0 or 1), you can use the Bitwise XOR Assignment Operator. Like so:
bool ^= true; //- toggle value.
This is especially good if you use long, descriptive boolean names, EG:
var inDyn...
What is the meaning of CTOR?
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It's just shorthand for "constructor" - and it's what the constructor is called in IL, too. For example, open up Reflector and look at a type and you'll see members called .ctor for the various constructors.
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How do I replace a character at a particular index in JavaScript?
... string using two substrings and stuff the character between them
METHOD2: convert the string to character array, replace one array member and join it
Personally, I would use these two methods in different cases. Let me explain.
@FabioPhms: Your method was the one I initially used and I was afrai...
How to keep the console window open in Visual C++?
I'm starting out in Visual C++ and I'd like to know how to keep the console window.
22 Answers
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