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What does get-task-allow do in Xcode?
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How do I get SUM function in MySQL to return '0' if no values are found?
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Use COALESCE to avoid that outcome.
SELECT COALESCE(SUM(column),0)
FROM table
WHERE ...
To see it in action, please see this sql fiddle: http://www.sqlfiddle.com/#!2/d1542/3/0
More Information:
Given three tables (one with all numbers, one with ...
Get pandas.read_csv to read empty values as empty string instead of nan
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I added a ticket to add an option of some sort here:
https://github.com/pydata/pandas/issues/1450
In the meantime, result.fillna('') should do what you want
EDIT: in the development version (to be 0.8.0 final) if you specify an empty list of na_values, empty strings will stay empty strings ...
Left align and right align within div in Bootstrap
What are some of the common ways to left align some text and right align some other text within a div container in bootstrap?
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Private pages for a private Github repo
...lso here on SO. But I was wondering if there could be a http://foo.github.com for a private repository named foo which is accessible only one had access to the foo repository itself.
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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
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git hash-object -t tree /dev/null
Or, as Ciro Santilli proposes in the comments:
printf '' | git hash-object --stdin -t tree
Or, as seen here, from Colin Schimmelfing:
git hash-object -t tree --stdin < /dev/null
So I guess it is safer to define a variable with the result of that command...
CPU Privilege Rings: Why rings 1 and 2 aren't used?
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From superuser.com/questions/1402537/…: "Running ring 0 code in ring 1 causes a lot of additional instruction faults, as ring 1 is not allowed to execute any privileged instructions, of which guest's ring-0 contains plenty. With each of t...
Case insensitive access for generic dictionary
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There's no way to specify a StringComparer at the point where you try to get a value. If you think about it, "foo".GetHashCode() and "FOO".GetHashCode() are totally different so there's no reasonable way you could implement a case-insensitive get on a case-se...
How to get a time zone from a location using latitude and longitude coordinates?
...stions on StackOverflow about resolving a time zone from a location. This community wiki is an attempt at consolidating all of the valid responses.
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sed: print only matching group
...regexp-extended` option otherwise I was getting invalid reference \1 on s' command's RHS ` error.
– Daniel Sokolowski
Aug 11 '14 at 16:11
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