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Finding element's position relative to the document
... First,you need to decide whether to take account of border and margin according to box-sizing. Second, the collapsed margin should be considered. And last, there will be more complicated situation in the future which would make this answer worse.
– xianshenglu
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MySQL Multiple Joins in one query?
...want to do a LEFT OUTER JOIN which will return all your dashboard messages and an image_filename only if one exists (otherwise you'll get a null)
SELECT dashboard_data.headline, dashboard_data.message, dashboard_messages.image_id, images.filename
FROM dashboard_data
INNER JOIN dashboard_messag...
Is it possible for a computer to “learn” a regular expression by user-provided examples?
...ton, it is possible to learn some regular expressions by a program. Kearns and Valiant show some cases where it is not possible to learn a finite automaton. A related problem is learning hidden Markov Models, which are probabilistic automata that can describe a character sequence. Note that most mod...
Does Git Add have a verbose switch
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For some git-commands you can specify --verbose,
git 'command' --verbose
or
git 'command' -v.
Make sure the switch is after the actual git command. Otherwise - it won't work!
Also useful:
git 'command' --dry-run
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IEnumerable to string [duplicate]
I've never stumbled across this before, but I have now and am surprised that I can't find a really easy way to convert an IEnumerable<char> to a string .
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Intellij idea subversion checkout error: `Cannot run program “svn”`
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I solved this by uncheking the "Use command-line client" option from Subversion settings.
This works with version 1.6 and 1.7 only. See @Vic's answer for SVN version 1.8.
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When should std::move be used on a function return value? [duplicate]
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met save for the fact that the source object is a function parameter,
and the object to be copied is designated by an lvalue, overload
resolution to select the constructor for the copy is first performed as
if the object were designated by an rvalue.
return foo; is a case of NRVO, so cop...
MySQL error 1449: The user specified as a definer does not exist
...M information_schema.views
WHERE table_schema='your-database-name';
Copy and run the ALTER statements
How to change the definer for stored procedures
Example:
UPDATE `mysql`.`proc` p SET definer = 'user@%' WHERE definer='root@%'
Be careful, because this will change all the definers for all d...
Combine two data frames by rows (rbind) when they have different sets of columns
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rbind.fill and bind_rows() both silently drop rownames.
– MERose
Dec 5 '17 at 16:40
4
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Proper way to use **kwargs in Python
... I like to use positional arguments only for required arguments, and kwargs for arguments that may or may not be specified, but it is helpful to have a default value. kwargs is nice because you can submit your args in any order you choose. Positional arguments don't give you that freedom...