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How do I specify unique constraint for multiple columns in MySQL?
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That way combination of three would be unique? Or all individual three columns would be unique?
– Gary Lindahl
Sep 15 '11 at 0:03
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Naming conventions: “State” versus “Status” [closed]
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It depends on the context
State generally refers to the entire state of an entity - all its values and relationships at a particular point in time (usually, current)
Status is more of a time-point, say, where something is at in a process or workflow - is it dir...
Elegant way to combine multiple collections of elements?
...pe List<List<int>> , I could use SelectMany to combine them all into one collection.
11 Answers
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How to add percent sign to NSString
...ld look like this
[NSString stringWithFormat:@"%d%%", someDigit];
Also, all the other format specifiers can be found at Conceptual Strings Articles
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HTML: How to limit file upload to be only images?
...t="image/*". But we can still change it from the dropdown and it will show all files. So the Javascript part validates whether or not the selected file is an actual image.
<div class="col-sm-8 img-upload-section">
<input name="image3" type="file" accept="image/*" id="menu_images"/>...
What are the minimum margins most printers can handle?
... is only a safe bet on inkjets made for photo printing. Laser printers usually have a much larger margin. However, the question states that they're producing graphics, so optimizing for inkjets might be OK.
– Kevin Vermeer
Aug 19 '10 at 2:04
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Convert Enum to String
... my opinion this should be preferred whenever possible. 'Rename' and 'find all references' take it into account as well, potentially avoiding magic strings and duplicate constants.
– Timo
Jan 13 '16 at 10:06
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How do I install Python packages on Windows?
I'm having a hard time setting up python packages. EasyInstall from SetupTools is supposed to help that, but they don't have an executable for Python 2.6.
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How can I convert a long to int in Java?
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long l = 100000;
int i = (int) l;
Note, however, that large numbers (usually larger than 2147483647 and smaller than -2147483648) will lose some of the bits and would be represented incorrectly.
For instance, 2147483648 would be represented as -2147483648.
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What's the easy way to auto create non existing dir in ansible
... Should note that you may want to add recurse=yes to the file call to get mkdir -p type behavior
– Mitch
Feb 10 '16 at 19:45
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