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How to properly ignore exceptions
... otherwise you will have nightmares when hunting down trivial bugs, hidden by your generic "except"s. See dbr's answer for more info. (I know this was not the original question - but anyone looking for this will just take your snippet and use it as is)
– johndodo
...
Is there a difference between “raise exception()” and “raise exception” without parenthesis?
...ion. If it is a class, the exception instance will be obtained when needed by instantiating the class with no arguments."
That said, even though the semantics are the same, the first form is microscopically faster, and the second form is more flexible (because you can pass it arguments if needed)....
How can you do anything useful without mutable state?
...d around is stateless coding. It seems to me that simplifying programming by removing mutable state is like "simplifying" a car by removing the dashboard: the finished product may be simpler, but good luck making it interact with end-users.
...
Convert one date format into another in PHP
...date('Y-m-d H:i:s', '1234567890');
DateTime() works with Unix timestamps by adding an @ before the timestamp:
$date = new DateTime('@1234567890');
$new_date_format = $date->format('Y-m-d H:i:s');
If the timestamp you have is in milliseconds (it may end in 000 and/or the timestamp is thirteen...
Renaming or copying files and folder using NERDTree on Vim. Is it possible?
...my life! Is there a way to disable the confirm question when delete a file by using 'm + d', It really tedious to confirm, and it need to confirm twice. I just want it no prompt at all. Do you know how to do it?
– mko
Apr 12 '13 at 1:28
...
Boolean.hashCode()
...aps can contain booleans together with other objects. Also, as pointed out by Drunix, a common way to create hash functions of composite objects is to reuse the subcomponents hash code implementations in which case it's good to return large primes.
Related questions:
Why use a prime number in has...
How to check whether dynamically attached event listener exists or not?
...st or not.
The only way you can see if an event listener is attached is by attaching event listeners like this:
elem.onclick = function () { console.log (1) }
You can then test if an event listener was attached to onclick by returning !!elem.onclick (or something similar).
...
How exactly does a generator comprehension work?
... them into list, it waits, and yields each item out of the expression, one by one.
>>> my_list = [1, 3, 5, 9, 2, 6]
>>> filtered_list = [item for item in my_list if item > 3]
>>> print(filtered_list)
[5, 9, 6]
>>> len(filtered_list)
3
>>> # compare to...
Remove an Existing File from a Git Repo
...t.log
C-d
from m. narebski: You then need to remove the file from the repo by executing "git rm --cached <file> and then committing this removal"
If you were also hoping to make the repo look as if it had never tracked that file, that is much more complicated and highly discouraged as it not...
Unpivot with column name
...
You may also try standard sql un-pivoting method by using a sequence of logic with the following code..
The following code has 3 steps:
create multiple copies for each row using cross join (also creating subject column in this case)
create column "marks" and fill in rele...