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What is the fastest way to compute sin and cos together?
... separately one after another like a = cos(x); b = sin(x); , but I wonder if there is a faster way when needing both values.
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Adding options to a using jQuery?
...));
This DID work:
var o = new Option("option text", "value");
/// jquerify the DOM object 'o' so we can use the html method
$(o).html("option text");
$("#selectList").append(o);
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Why can't I have abstract static methods in C#?
... A
{
public static void Test()
{
}
}
public class B : A
{
}
If you call B.Test, like this:
class Program
{
static void Main(string[] args)
{
B.Test();
}
}
Then the actual code inside the Main method is as follows:
.entrypoint
.maxstack 8
L0000: nop
L0001: call...
How to change the text on the action bar
... name of the application and I want it to display something custom and be different for each screen in my app.
18 Answers
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Pragma in define macro
...
If you're using c99 or c++0x there is the pragma operator, used as
_Pragma("argument")
which is equivalent to
#pragma argument
except it can be used in macros (see section 6.10.9 of the c99 standard, or 16.9 of the c++0...
Opening port 80 EC2 Amazon web services [closed]
...tables started by default. Windows has windows FW. Turn them off and see if that was the problem. If it was, then edit the firewall to allow 80/443 and restart
– Andrew Backer
Feb 28 '14 at 8:36
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Convert stdClass object to array in PHP
... back to an array:
$array = json_decode(json_encode($object), true);
Or if you prefer, you can traverse the object manually, too:
foreach ($object as $value)
$array[] = $value->post_id;
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What is the Swift equivalent to Objective-C's “@synchronized”?
I've searched the Swift book, but can't find the Swift version of @synchronized. How do I do mutual exclusion in Swift?
21 ...
Rails: Using greater than/less than with a where statement
...sers with an id greater than 200, but I'm having some trouble with the specific syntax.
9 Answers
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Convert string to symbol-able in ruby
...from string to symbol), and .to_s can convert (from symbol to string). and if you are dealing with an array consider .map(&:to_sym) or .map(&to_s) to convert all elements.
– jasonleonhard
Nov 5 '15 at 22:22
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