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Multiline bash commands in makefile
...ipts within makefiles:
Escape the script's use of $ by replacing with $$
Convert the script to work as a single line by inserting ; between commands
If you want to write the script on multiple lines, escape end-of-line with \
Optionally start with set -e to match make's provision to abort on sub-c...
Why does this Java program terminate despite that apparently it shouldn't (and didn't)?
...ead of it, but I don't see how that can be the issue.
currentPos = new Point(currentPos.x+1, currentPos.y+1); does a few things, including writing default values to x and y (0) and then writing their initial values in the constructor. Since your object is not safely published those 4 write operati...
Is there a typical state machine implementation pattern?
...instance_data_t *data ) {
return state_table[ cur_state ]( data );
};
int main( void ) {
state_t cur_state = STATE_INITIAL;
instance_data_t data;
while ( 1 ) {
cur_state = run_state( cur_state, &data );
// do other program logic, run other state machines, etc
...
When to use inline function and when not to use it?
I know that inline is a hint or request to compiler and its used to avoid function call overheads.
14 Answers
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What is the proper way to URL encode Unicode characters?
...present characters from the unreserved set without translation, and should convert all other characters to bytes according to UTF-8, and then percent-encode those values. This requirement was introduced in January 2005 with the publication of RFC 3986. URI schemes introduced before this date are not...
Generating a drop down list of timezones with PHP
... return $timezones;
}
function format_GMT_offset($offset) {
$hours = intval($offset / 3600);
$minutes = abs(intval($offset % 3600 / 60));
return 'GMT' . ($offset ? sprintf('%+03d:%02d', $hours, $minutes) : '');
}
function format_timezone_name($name) {
$name = str_replace('/', ', '...
List vs List
...d your scenario there. However, you can help the compiler by giving him a hint:
List<Car> cars;
List<? extends Automobile> automobiles = cars; // no error
Contravariance
The reverse of co-variance is contravariance. Where in covariance the parameter types must have a subtype relati...
What is mod_php?
... of using PHP as a module is speed - you will see a big speed boost if you convert from CGI to a module. Many people, particularly Windows users, do not realise this, and carry on using the php.exe CGI SAPI, which is a shame - the module is usually three to five times faster.
There is one key advant...
What is the relationship between Looper, Handler and MessageQueue in Android?
...ead (a subclass of Thread).
A Handler is a utility class that facilitates interacting with a Looper—mainly by posting messages and Runnable objects to the thread's MessageQueue. When a Handler is created, it is bound to a specific Looper (and associated thread and message queue).
In typical usag...
SQlite Getting nearest locations (with latitude and longitude)
... the fudge factor in radians and the columns in degrees? Shouldn't them be converted to the same unit?
– Rangel Reale
Dec 11 '12 at 18:46
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