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How do I compare two string variables in an 'if' statement in Bash? [duplicate]
...ms to be a lot of times spaces can cause an error, i.e declaring variables etc.
– The Humble Rat
Apr 24 '14 at 12:32
4
...
Class method differences in Python: bound, unbound and static
...
where
self is the CPO (it could be an instance of list, str, function etc) and is supplied by the runtime
instance is the instance of the class where this CPO is defined (the object 'c' above) and needs to be explicity supplied by us
owner is the class where this CPO is defined(the class object...
JavaScript unit test tools for TDD
...pport
javascript # API for running tests
proper exit status for CI support etc
auto-detects and disables coloring for non-ttys
maps uncaught exceptions to the correct test case
async test timeout support
test-specific timeouts
growl notification support
reports test durations
highlights slow tests
f...
Two divs side by side - Fluid display
...different browsers available (as in it always works on chrome, Mozilla, IE etc etc), not that it works 94% of the time regardless of browser?
– Joe
Jul 24 '16 at 11:54
6
...
How can I convert ereg expressions to preg in PHP?
...o]', $str);
preg_match('(^hello)', $str);
preg_match('{^hello}', $str);
// etc
If your delimiter is found in the regular expression, you have to escape it:
ereg('^/hello', $str);
preg_match('/^\/hello/', $str);
You can easily escape all delimiters and reserved characters in a string by using pr...
How to call an external command?
...can get the stdout, stderr, the "real" status code, better error handling, etc...).
The official documentation recommends the subprocess module over the alternative os.system():
The subprocess module provides more powerful facilities for spawning new processes and retrieving their results; usin...
Use tnsnames.ora in Oracle SQL Developer
... $TNS_ADMIN/tnsnames.ora
TNS_ADMIN lookup key in the registry
/etc/tnsnames.ora ( non-windows )
$ORACLE_HOME/network/admin/tnsnames.ora
LocalMachine\SOFTWARE\ORACLE\ORACLE_HOME_KEY
LocalMachine\SOFTWARE\ORACLE\ORACLE_HOME
If your tnsnames.ora file is not getting ...
Can anyone explain IEnumerable and IEnumerator to me? [closed]
...tor yourself, since Array already does this. E.g. foreach(Car c in carLot.getCars()) { ... }
– Nick Rolando
Jun 27 '19 at 19:57
...
Reason for Column is invalid in the select list because it is not contained in either an aggregate f
...f the grouping criteria, nor appear in aggregate functions (SUM, MIN, MAX, etc.).
Fixing it might look like this:
SELECT a, MAX(b) AS x
FROM T
GROUP BY a
Now it's clear that you want the following result:
a x
--------
1 ghi
2 pqr
...
UnicodeDecodeError when redirecting to file
...ers are mostly unrelated to computers: one can draw them on a chalk board, etc., like for instance بايثون, 中蟒 and ????. "Characters" for machines also include "drawing instructions" like for example spaces, carriage return, instructions to set the writing direction (for Arabic, etc.), acc...