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Which is better in python, del or delattr?
...second. del foo.bar compiles to two bytecode instructions:
2 0 LOAD_FAST 0 (foo)
3 DELETE_ATTR 0 (bar)
whereas delattr(foo, "bar") takes five:
2 0 LOAD_GLOBAL 0 (delattr)
3 LOAD_FAST 0 (f...
MySQL JOIN the most recent row only?
... CONCAT(title, ' ', forename, ' ', surname) LIKE '%Smith%'
LIMIT 10, 20;
Note that a JOIN is just a synonym for INNER JOIN.
Test case:
CREATE TABLE customer (customer_id int);
CREATE TABLE customer_data (
id int,
customer_id int,
title varchar(10),
forename varchar(10),
...
href overrides ng-click in Angular.js
...|
edited Feb 18 '13 at 16:05
answered Feb 18 '13 at 15:18
G...
How to delete or add column in SQLITE?
...
360
ALTER TABLE SQLite
SQLite supports a limited subset of ALTER TABLE. The ALTER TABLE command ...
How to do ssh with a timeout in a script?
...
ssh -o ConnectTimeout=10 <hostName>
Where 10 is time in seconds. This Timeout applies only to the creation of the connection.
share
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im...
How to write an inline IF statement in JavaScript?
...
Mr.Web
5,61088 gold badges3434 silver badges7373 bronze badges
answered Apr 22 '12 at 17:40
MattWMattW
...
Does Dart support enumerations?
...d approach before 1.8:
class Fruit {
static const APPLE = const Fruit._(0);
static const BANANA = const Fruit._(1);
static get values => [APPLE, BANANA];
final int value;
const Fruit._(this.value);
}
Those static constants within the class are compile time constants, and this clas...
Timer function to provide time in nano seconds using C++
...ar issues (p4 dual, p4 ht,
core2 dual, core2 quad, phenom quad).
EDIT 2013/07/16:
It looks like there is some controversy on the efficacy of QPC under certain circumstances as stated in http://msdn.microsoft.com/en-us/library/windows/desktop/ee417693(v=vs.85).aspx
...While QueryPerformanceC...
What is the fastest way to compute sin and cos together?
...s yet another example (with gcc): http://www.allegro.cc/forums/thread/588470
Hope one of them helps.
(I didn't use this instruction myself, sorry.)
As they are supported on processor level, I expect them to be way much faster than table lookups.
Edit:
Wikipedia suggests that FSINCOS was added at ...
How to extract base URL from a string in JavaScript?
...
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