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What is the difference between a map and a dictionary?
... terms ("Object" in Javascript, "Hash" in Ruby, "Table" in Lua), but those all have separate meanings in programming too, so I'd avoid them.
See here for more info.
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Regular Expression to find a string included between two characters while EXCLUDING the delimiters
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PHP:
$string ='This is the match [more or less]';
preg_match('#\[(.*)\]#', $string, $match);
var_dump($match[1]);
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How to create id with AUTO_INCREMENT on Oracle?
...NCREMENT by 1),
c2 VARCHAR2(10)
);
Alternatively, Oracle 12 also allows to use a sequence as a default value:
CREATE SEQUENCE dept_seq START WITH 1;
CREATE TABLE departments (
ID NUMBER(10) DEFAULT dept_seq.nextval NOT NULL,
DESCRIPTION VARCHAR2(50) NOT NULL);
ALTER T...
Is multiplication and division using shift operators in C actually faster?
...n to shift, shift. If you mean to multiply, multiply. Do what is semantically clearest--your coworkers will thank you later. Or, more likely, curse you later if you do otherwise.
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What are all the uses of an underscore in Scala?
...s taken on scala-lang.org and noticed a curious question: " Can you name all the uses of “_”? ". Can you? If yes, please do so here. Explanatory examples are appreciated.
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Class with Object as a parameter
... Table to be a new-style class (as opposed to "classic" class).
In Python3 all classes are new-style classes, so this is no longer necessary.
New style classes have a few special attributes that classic classes lack.
class Classic: pass
class NewStyle(object): pass
print(dir(Classic))
# ['__doc__...
How to encode URL parameters?
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With PHP
echo urlencode("http://www.image.com/?username=unknown&password=unknown");
Result
http%3A%2F%2Fwww.image.com%2F%3Fusername%3Dunknown%26password%3Dunknown
With Javascript:
var myUrl = "http://www.image.com/?user...
Select last N rows from MySQL
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But then you just do a php array_reverse() or whatever the equivalent is in your scripting language of choice. The database doesn't need to do that work.
– Joe
Aug 7 '16 at 22:58
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What's the best way to make a d3.js visualisation layout responsive?
...sive
http://soqr.fr/testsvg/embed-svg-liquid-layout-responsive-web-design.php
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Maximum Year in Expiry Date of Credit Card
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<?php
$y = gmdate("Y");
$x = 20;
$max = ($y + $x);
while ($y <= $max) {
echo "<option value='$y'>$y</option>";
$y = $y + 1;
}
?>
sh...