Original: http://www.inf.puc-rio.br/~roberto/lpeg/lpeg.html Translator: This is the official Lpeg document. This period of time to study lpeg found that the domestic articles on lpeg very few, so decided to translate the document. Translation is not
function | An explanatory function is a program that has 0 or more parameters and has a return value. In SQL, Oracle builds a series of functions that can be called SQL or PL/SQL statements, and functions fall into two main categories:
Single line
To re-learn Python:After learning a little python two years ago, I've never done anything about it, and basically forgot all about it.or |&Ord () ASCII to 16 binaryChr () 16 binary to ASCII>>> u ' abc '. Encode (' utf-8 ') ' abc ' >>> u ' Chinese '.
The comparison operators in PHP are a bit weird and prone to errors, and now the comparison rules are listed:1, when the size comparison of two characters, is compared to the ASCII size of the two characters-this article is easy to understand.2,
MATLAB plot
The powerful drawing function is one of the characteristics of MATLAB. MATLAB provides a series of drawing functions. You don't need to think too much about drawing details, but you only need to give some basic parameters to obtain the
The comparison operators in PHP are a bit weird and prone to errors, and now the comparison rules are listed:
1, when the size comparison of two characters, is compared to the ASCII size of the two characters?? This one is easy to understand.
2,
Regular Expression SyntaxIn a typical search and replace operation, you must provide the exact text you want to find. This technique may suffice for simple search and replace tasks in static text, but because of its lack of flexibility, it can be
Regular expression syntax
In typical search and replacement operations, you must provide the exact text to be searched. This technology may be sufficient for simple search and replacement tasks in static text, but it is difficult or even
First of all, the magic of PHP is supported by character data types, some students wrote such a code:
for ($c = ' a '; $c Echo $c. ' ';}
But it turns out it's not the A to Z he wants.A b c d e F g h i j k l m n o p q R S t u v w x y z aa ab AC ad
PHP veteran new people come to see it this question is interesting
$id 1 = "42022219860323211";$id 2 = "42022219860323210";if ($id 1== $id 2) { echo "The two identity cards are the same";}else{ echo "These two identity cards are not the
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