Difference between revisions of "Python-Perl cheatsheet"
Devicerandom (Talk | contribs) |
Devicerandom (Talk | contribs) |
||
| Line 42: | Line 42: | ||
|create a list from whitespaced values | |create a list from whitespaced values | ||
|''(no real equivalent)'' | |''(no real equivalent)'' | ||
| − | |qw( fred barney wilma dino) | + | |qw( fred barney wilma dino); |
|You can use separators others than parenthesis, e.g. qw ! fred barney wilma dino ! | |You can use separators others than parenthesis, e.g. qw ! fred barney wilma dino ! | ||
|- | |- | ||
| Line 57: | Line 57: | ||
| | | | ||
|array.append(item) | |array.append(item) | ||
| − | |push @array, item | + | |push @array, item; |
| + | | | ||
| + | |- | ||
| + | | | ||
| + | |val = array.pop() | ||
| + | |val = pop @array, item; | ||
| | | | ||
|- | |- | ||
| − | |||
|} | |} | ||
[[Category:Programming]] | [[Category:Programming]] | ||
Revision as of 15:31, 25 April 2011
| what | Python | Perl | notes |
|---|---|---|---|
| null type | None | undef | not exactly identical |
| String concatenation | "py"+"thon" | "pe"."rl" | |
| declare a list | [1,2,3] | (1,2,3) | note that arrays contain only scalars! (1,2, (3,4), 5) becomes (1,2,3,4,5) |
| array length | len(array) | $#array + 1 | Python returns the length of array. Perl gives me the index of the last element. |
| range(1,100) | (1..100) | ||
| create a list from whitespaced values | (no real equivalent) | qw( fred barney wilma dino); | You can use separators others than parenthesis, e.g. qw ! fred barney wilma dino ! |
| multiple assignment | fred, barney, dino = "flintstone", "rubble", None | ($fred, $barney, $dino) = ("flintstone", "rubble", undef); | |
| array concatenation | a+b | (@a, @b) | you can also mix like (@a, 3, @b, undef) |
| array.append(item) | push @array, item; | ||
| val = array.pop() | val = pop @array, item; |