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What is a “callback” in C and how are they implemented?
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123
Here is an example of callbacks in C.
Let's say you want to write some code that allows regis...
Purpose of “consider_all_requests_local” in config/environments/development.rb?
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123
Non-local requests result in user-friendly error pages. Local requests, assumed to come from ...
Multiple “order by” in LINQ
...correct orderings if CategoryID is an int. For example, something with id=123, name=5times will appear after id=1234, name=something instead of before. It's also not inefficient to do string comparisons where int comparisons could occur.
– AaronLS
May 6 '13 a...
How does the Java 'for each' loop work?
...est A: 326,373,762 nanoseconds
Test B: 202,555,566 nanoseconds
B faster by 123,818,196 nanoseconds (37.437545972215744% faster)
I also ran this for an Integer array, and indexes are still the clear winner, but only between 18 and 25 percent faster.
For collections, iterators are faster than index...
Difference between UIViewContentModeScaleAspectFit and UIViewContentModeScaleToFill?
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123
uiimageview-scaling-explained-visually
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Splitting string into multiple rows in Oracle
...racle's database object naming conventions. It will hurl on a string like '123,456,789' for instance.
– APC
Jan 23 '18 at 7:09
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Conditional HTML Attributes using Razor MVC3
...sers named himself '/><script>$.post('changepassword.php?password=123')</script> and now any other user who views this page has their password instantly changed to a password that the malicious user knows.
sha...
How to measure elapsed time in Python?
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(For performance measurement, time.clock() is actually preferred, since it can't be interfered with if the system clock gets messed with, ...
Haskell: Converting Int to String
...an Int, use:
module Lib
( someFunc
) where
someFunc :: IO ()
x = 123
someFunc = putStrLn (show x)
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This Handler class should be static or leaks might occur: IncomingHandler
...lass implements MessageHandler {
private static final int DO_IT_MSG = 123;
private MainThreadHandler<MyClass> mHandler = new MainThreadHandler<>(this);
private void start() {
// Do it in 5 seconds.
mHandler.sendEmptyMessageDelayed(DO_IT_MSG, 5 * 1000);
...