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Element-wise addition of 2 lists?
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Use map with operator.add:
>>> from operator import add
>>> list( map(add, list1, list2) )
[5, 7, 9]
or zip with a list comprehension:
>>> [sum(x) for x in zip(list1, list2)]
[5, 7, 9]
Timing comparisons:
>>...
How to check that an object is empty in PHP?
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Peter KellyPeter Kelly
12.9k66 gold badges4949 silver badges6161 bronze badges
9
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Fastest way to copy file in node.js
...ng on (node.js) implies lots of operations with the file system (copying/reading/writing etc). I'd like to know which methods are the fastest, and I'd be happy to get an advice. Thanks.
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Best way to test if a row exists in a MySQL table
...le1 WHERE ...)
and per the documentation, you can SELECT anything.
Traditionally, an EXISTS subquery starts with SELECT *, but it could
begin with SELECT 5 or SELECT column1 or anything at all. MySQL
ignores the SELECT list in such a subquery, so it makes no difference.
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Java time-based map/cache with expiring keys [closed]
...apMaker methods have been deprecated in favour of the new CacheBuilder:
LoadingCache<Key, Graph> graphs = CacheBuilder.newBuilder()
.maximumSize(10000)
.expireAfterWrite(10, TimeUnit.MINUTES)
.build(
new CacheLoader<Key, Graph>() {
public Graph load(Key key...
Check with jquery if div has overflowing elements
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Ivan Akulov
3,78344 gold badges3030 silver badges5757 bronze badges
answered Oct 5 '11 at 22:53
MohsenMohsen
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Use Font Awesome Icon in Placeholder
Is it possible to use Font Awesome Icon in a Placeholder? I read that HTML isn't allowed in a placeholder. Is there a workaround?
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Any way to select without causing locking in MySQL?
...)
and the MYSQL equivalent is
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED ;
SELECT * FROM TABLE_NAME ;
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ ;
EDIT
Michael Mior suggested the following (from the comments)
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED ;
SELECT...
How do I assert my exception message with JUnit Test annotation?
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Community♦
111 silver badge
answered Jun 29 '11 at 22:26
Jesse MerrimanJesse Merriman
5,83911 gold ba...
Visual Studio loading symbols
... it once. It will remove some kind of "invalid" breakpoints too and then loading symbols will be fast again. I was chasing this issue for days :(.
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