What is the difference between ‘/’ and ‘//’ when used for division?

In Python 3.x, 5 / 2 will return 2.5 and 5 // 2 will return 2. The former is floating point division, and the latter is floor division, sometimes also called integer division. In Python 2.2 or later in the 2.x line, there is no difference for integers unless you perform a from __future__ import division, which causes Python 2.x to adopt the 3.x behavior. … Read more

How to escape single quotes within single quoted strings

If you really want to use single quotes in the outermost layer, remember that you can glue both kinds of quotation. Example: Explanation of how ‘”‘”‘ is interpreted as just ‘: ‘ End first quotation which uses single quotes. ” Start second quotation, using double-quotes. ‘ Quoted character. ” End second quotation, using double-quotes. ‘ Start third quotation, using single quotes. If you … Read more

SyntaxError invalid token

In Python 3, leading zeros are not allowed on numbers. E.g: Etc. are not allowed, but should be written as 5 and 123 instead. In Python 2, however, the leading zero signifies that the number is an octal number (base eight), so 04 or 03 would mean 4 and 3 in octal, respectively, but 08 would be invalid as it is not a valid octal number. In Python 3, the syntax … Read more

How do you pass a function as a parameter in C?

Declaration A prototype for a function which takes a function parameter looks like the following: This states that the parameter f will be a pointer to a function which has a void return type and which takes a single int parameter. The following function (print) is an example of a function which could be passed to func as a parameter because it is … Read more

jquery variable syntax [duplicate]

$self has little to do with $, which is an alias for jQuery in this case. Some people prefer to put a dollar sign together with the variable to make a distinction between regular vars and jQuery objects. example: These are declared as two different variables. It’s like putting underscore before private variables. A somewhat popular pattern … Read more

How do you pass a function as a parameter in C?

Declaration A prototype for a function which takes a function parameter looks like the following: This states that the parameter f will be a pointer to a function which has a void return type and which takes a single int parameter. The following function (print) is an example of a function which could be passed to func as a parameter because it is … Read more

Shell script “for” loop syntax

Brace expansion, {x..y} is performed before other expansions, so you cannot use that for variable length sequences. Instead, use the seq 2 $max method as user mob stated. So, for your example it would be:

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)