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Combine two columns of text in pandas dataframe
I have a 20 x 4000 dataframe in Python using pandas. Two of these columns are named Year and quarter . I'd like to create a variable called period that makes Year = 2000 and quarter= q2 into 2000q2 .
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Laravel migration: unique key is too long, even if specified
...l', 250);
Which is the default, actually:
$table->string('email');
And you should be good.
For Laravel 5.4 you can find a solution in this Laravel 5.4: Specified key was too long error, Laravel News post:
As outlined in the Migrations guide to fix this all you have to do is edit your AppSe...
Add leading zeroes/0's to existing Excel values to certain length
There are many, many questions and quality answers on SO regarding how to prevent leading zeroes from getting stripped when importing to or exporting from Excel. However, I already have a spreadsheet that has values in it that were truncated as numbers when, in fact, they should have been handled a...
Best XML parser for Java [closed]
...most, UTF-8 encoded) XML files, rummage around looking at various elements and attributes, perhaps modify a few and write the XML back out again to disk (preferably with nice, indented formatting).
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How to find indices of all occurrences of one string in another in JavaScript?
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new RegExp(searchStr) would be the way, and yes, in the general case you would have to escape special characters. It's not really worth doing unless you need that level of generality.
– Tim Down
Aug 4 '10 at 23:43
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Simple conversion between java.util.Date and XMLGregorianCalendar
I'm looking for a simple method of converting between java.util.Date and javax.xml.datatype.XMLGregorianCalendar in both directions.
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SQL is null and = null [duplicate]
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In SQL, a comparison between a null value and any other value (including another null) using a comparison operator (eg =, !=, <, etc) will result in a null, which is considered as false for the purposes of a where clause (strictly speaking, it's "not true", rather...
Open a new tab in gnome-terminal using command line [closed]
I'm using Ubuntu 9.04 x64 and when I write:
10 Answers
10
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How to format date and time in Android?
How to format correctly according to the device configuration date and time when having a year, month, day, hour and minute?
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Run all SQL files in a directory
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Create a .BAT file with the following command:
for %%G in (*.sql) do sqlcmd /S servername /d databaseName -E -i"%%G"
pause
If you need to provide username and passsword
for %%G in (*.sql) do sqlcmd /S servername /d databaseName -U username -P
password -i"%%G"
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