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A migration to add unique constraint to a combination of columns
...mns. i.e. for a people table, a combination of first_name , last_Name and Dob should be unique.
6 Answers
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How to apply two CSS classes to a single element
... b"></div>
Using .a { ... } as a selector will select the first and third. However, if you want to select one which has both a and b, you can use the selector .a.b { ... }. Note that this won't work in IE6, it will simply select .b (the last one).
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Check orientation on Android phone
How can I check if the Android phone is in Landscape or Portrait?
23 Answers
23
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Git: Find the most recent common ancestor of two branches
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@funroll: Or the shorthand for that: git log master...HEAD
– CB Bailey
Sep 8 '14 at 20:32
17
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Is explicitly closing files important?
... Python aren't guaranteed to work this way. For example IronPython, PyPy, and Jython don't use reference counting and therefore won't close the file at the end of the loop.
It's bad practice to rely on CPython's garbage collection implementation because it makes your code less portable. You might...
Access Container View Controller from Parent iOS
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Yes, you can use the segue to get access the child view controller (and its view and subviews). Give the segue an identifier (such as alertview_embed), using the Attributes inspector in Storyboard. Then have the parent view controller (the one housing the container view) implement a method li...
Git Gui: Perpetually getting “This repository currently has approximately 320 loose objects.”
...sible performance issue to you. This should be fixable by running this command from the command line:
cd path/to/your/git/repo
git gc --aggressive
From the output of git help gc:
Runs a number of housekeeping tasks within the current repository, such as compressing file revisions (to reduce disk s...
Log4net rolling daily filename with date in the file name
... <preserveLogFileNameExtension value="true" /> is the correct syntax and this is a great answer. How did the loss occur, may I ask?
– Larry B
Feb 12 '18 at 14:48
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Python: How to create a unique file name?
I have a python web form with two options - File upload and textarea . I need to take the values from each and pass them to another command-line program. I can easily pass the file name with file upload options, but I am not sure how to pass the value of the textarea.
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Vibrate and Sound defaults on notification
I'm trying to get a default vibrate and sound alert when my notification comes in, but so far no luck. I imagine it's something to do with the way I set the defaults, but I'm unsure of how to fix it. Any thoughts?
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