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Why were pandas merges in python faster than data.table merges in R in 2012?
...ndas design and development.
The comparison with data.table is actually a bit interesting because the whole point of R's data.table is that it contains pre-computed indexes for various columns to accelerate operations like data selection and merges. In this case (database joins) pandas' DataFrame c...
Difference between \b and \B in regex
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10
+1 because zero-width is an important part of the definition. If it weren't zero-width, then it would also grab those word/non-word charact...
Naming “class” and “id” HTML attributes - dashes vs. underlines [closed]
...:19
bzrk
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answered May 2 '12 at 11:29
RaatjeRaatje
1,...
Maven parent pom vs modules pom
...eN
| `-- pom.xml
`-- pom.xml
This makes the checkout a bit painful and a common way to deal with that is to use svn:externals. For example, add a trunks directory:
root
|-- parent-pom
| |-- branches
| |-- tags
| `-- trunk
| `-- pom.xml
|-- projectA
| |-- branches
|...
How to find if an array contains a specific string in JavaScript/jQuery? [duplicate]
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Black
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answered Mar 7 '13 at 16:50
JamesJames
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How to select first parent DIV using jQuery?
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10
parents("div") is traversing and returns all the parent div's you should use .eq(0) after it to make sure it returns just the one you want
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JS: Check if date is less than 1 hour ago?
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Define
var ONE_HOUR = 60 * 60 * 1000; /* ms */
then you can do
((new Date) - myDate) < ONE_HOUR
To get one hour from a date, try
new Date(myDate.getTime() + ONE_HOUR)
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Lock Escalation - What's happening here?
... the column is added before the LOCK_ESCALATION is set. I think I'll dig a bit further and write another answer.
– Vladimir Baranov
Sep 19 '18 at 2:32
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Having Django serve downloadable files
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elo80kaelo80ka
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How do you set your pythonpath in an already-created virtualenv?
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arogachev
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answered Jul 31 '13 at 7:17
tjbtjb
10...