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how do I insert a column at a specific column index in pandas?
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see docs: http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.insert.html
using loc = 0 will insert at the beginning
df.insert(loc, column, value)
df = pd.DataFrame({'B': [1, 2, 3], 'C': [4, 5, 6]})
df
O...
is_null($x) vs $x === null in PHP [duplicate]
... can check the code: is_identical_function (===) and php_is_type (is_null) do the same thing for the IS_NULL case.
The related isset() language construct checks whether the variable actually exists before doing the null check. So isset($undefinedVar) will not throw a notice.
Also note that isset...
How do I toggle an ng-show in AngularJS based on a boolean?
... reply button I want to toggle whether the form is shown or not. How can I do this?
6 Answers
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What are the benefits of Java's types erasure?
...ct a perspective that is not interested in whether we can make the machine do something, but more whether we can reason that the machine will do something we actually want. Good reasoning is a proof. Proofs can be specified in formal notation or something less formal. Regardless of the specificat...
Vim: What's the difference between let and set?
...it on. Number option: show value. String option: show value. This doesn't agree with what you have here, when you say 'will set the default value for option wrap'. ??
– Elliptical view
Jul 13 at 22:24
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How to concatenate text from multiple rows into a single text string in SQL server?
... ) [Students]
FROM dbo.Students ST2
) [Main]
You can do the same thing in a more compact way if you can concat the commas at the beginning and use substring to skip the first one so you don't need to do a sub-query:
SELECT DISTINCT ST2.SubjectID,
SUBSTRING(
(
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How do I get the function name inside a function in PHP?
... @KiranReddy There's a magic constant for that too: __CLASS__. Or you can do get_class($this).
– Sean the Bean
Jul 30 '18 at 13:25
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How do I programmatically change file permissions?
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selecting this one as I don't have the ability to use Marty Lamb's answer.
– Roy Rico
Mar 20 '09 at 0:44
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UITableView : viewForHeaderInSection: not called during reloadData:
...d return an appropriate non-zero height for the header. Also make sure you do not also implement the tableView:titleForHeaderInSection:. You should only use one or the other (viewForHeader or titleForHeader).
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PUT vs. POST in REST
...gning an API for asking questions. If you want to use POST then you would do that to a list of questions. If you want to use PUT then you would do that to a particular question.
Great both can be used, so which one should I use in my RESTful design:
You do not need to support both PUT and POST. ...