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Does MySQL ignore null values on unique constraints?
...sult:
x
NULL
NULL
1
This is not true for all databases. SQL Server 2005 and older, for example, only allows a single NULL value in a column that has a unique constraint.
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How to find out which fonts are referenced and which are embedded in a PDF document
...I'd like to inspect, which fonts are actually embedded in the pdf document and which are only referenced. Is there an easy (and cheap as in free) way to do that?
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Copying files from one directory to another in Java
...directory, dir, with text files. I iterate over the first 20 files in dir, and want to copy them to another directory in the dir directory, which I have created right before the iteration.
In the code, I want to copy the review (which represents the ith text file or review) to trainingDir . How c...
Remove HTML Tags in Javascript with Regex
...use the HTML parser doesn't require that the last tag be closed by a >, and the second fails because image loading starts even before a parsed DOM tree is added to the DOM, and $('<img ...>') invokes the HTML parser.
– Mike Samuel
Nov 1 '13 at 3:21
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CSS text-transform capitalize on all caps
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Clever thinking, well done Philihp. And well done Torin for pointing out "display: inline-block".
– Chris Mendes
Jul 8 '15 at 11:41
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Can you issue pull requests from the command line on GitHub?
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UPDATE: The hub command is now an official github project and also supports creating pull requests
ORIGINAL:
Seems like a particularly useful thing to add to the hub command: http://github.com/defunkt/hub or the github gem: http://github.com/d...
UnicodeDecodeError: 'charmap' codec can't decode byte X in position Y: character maps to
...coding. Which one you have to figure out yourself. Common ones are Latin-1 and UTF-8. Since 0x90 doesn't actually mean anything in Latin-1, UTF-8 (where 0x90 is a continuation byte) is more likely.
You specify the encoding when you open the file:
file = open(filename, encoding="utf8")
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Argparse optional positional arguments?
...arguments:
dir
optional arguments:
-h, --help show this help message and exit
-v
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HTTP test server accepting GET/POST requests
...ve test server that accepts my requests for basic information via HTTP GET and also allows me to POST (even if it's really not doing anything). This is entirely for test purposes.
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How to find a deleted file in the project commit history?
...ch touched that file. Then, you can find the version of the file you want, and display it with...
git show <SHA> -- <path-to-file>
Or restore it into your working copy with:
git checkout <SHA>^ -- <path-to-file>
Note the caret symbol (^), which gets the checkout prior to...