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Why are my balls disappearing? [closed]
...tyX);
ball2.nextY = (ball2.nextY += ball2.velocityY);
You don't need the extra assignments, and can just use the += operator alone:
ball1.nextX += ball1.velocityX;
ball1.nextY += ball1.velocityY;
ball2.nextX += ball2.velocityX;
ball2.nextY += ball2.velocityY;
...
Should I use “hasClass” before “addClass”? [duplicate]
...l because jQuery will also always check from within .addClass(). It's just extra work.
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Django: Why do some model fields clash with each other?
...
Sometimes you have to use extra formatting in related_name
- actually, any time when inheritance is used.
class Value(models.Model):
value = models.DecimalField(decimal_places=2, max_digits=5)
animal = models.ForeignKey(
Animal, relat...
How to get the insert ID in JDBC?
... Statement.RETURN_GENERATED_KEYS);
) {
statement.setString(1, user.getName());
statement.setString(2, user.getPassword());
statement.setString(3, user.getEmail());
// ...
int affectedRows = statement.executeUpdate();
if (affectedRows =...
How can I get device ID for Admob
...ebugEnabled(this)) //debug flag from somewhere that you set
{
String android_id = Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID);
String deviceId = md5(android_id).toUpperCase();
mAdRequest.addTestDevice(deviceId);
boolean isTest...
SQL variable to hold list of integers
...d a list of integers. But what you can do is store a list of integers as a string.
DECLARE @listOfIDs varchar(8000);
SET @listOfIDs = '1,2,3,4';
You can then split the string into separate integer values and put them into a table. Your procedure might already do this.
You can also use a dynamic ...
Exit a Script On Error
...
@mouviciel, @Gilles: Thanks for the extra info. It's been a while since I dealt with bash.
– DGH
Dec 8 '10 at 1:37
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#include in .h or .c / .cpp?
...t up to protect against multiple declaration/definition errors, then a few extra seconds of build time isn't worth worrying about. Trying to manage dependencies manually is a pain in the ass.
Of course, you shouldn't be including files where you don't need to.
...
Creating functions in a loop
...cifically looking for early binding.
If you're worried about f getting an extra argument (and thus potentially being called erroneously), there's a more sophisticated way which involved using a closure as a "function factory":
def make_f(i):
def f():
return i
return f
and in your...
What is causing “Unable to allocate memory for pool” in PHP?
...accessed all of the time like you want and have a big spike where a lot of extra infrequent files get added all at once), you are going to get errors thrown for TTL seconds. The cache is full, and you told APC that it shouldn't clear these entries so it complains. If you have TTL for 5 hours, you en...