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CHECK constraint in MySQL is not working
...e just ignored.
There is a simple alternative
You can create BEFORE INSERT and BEFORE UPDATE triggers which either cause an error or set the field to its default value when the requirements of the data are not met.
Example for BEFORE INSERT working after MySQL 5.5
DELIMITER $$
CREATE TRIGGER `test_b...
jQuery validation: change default error message
... rangelength: jQuery.validator.format("Please enter a value between {0} and {1} characters long."),
range: jQuery.validator.format("Please enter a value between {0} and {1}."),
max: jQuery.validator.format("Please enter a value less than or equal to {0}."),
min: jQuery.validator.forma...
Instance attribute attribute_name defined outside __init__
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@MericOzcan either setting a bunch of attributes to None and then setting them later in a parse_args function OR returning a short tuple from parse_args is OK. ideally, parse_args should be testable without needing a wizard instance.
– Erik Aronesty
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How can I use Python to get the system hostname?
...at program for a local network. I would like be able to identify computers and get the user-set computer name with Python.
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When does System.gc() do something?
... on lots of factors, like which JVM you're running on, which mode it's in, and which garbage collection algorithm it's using.
I wouldn't depend on it in your code. If the JVM is about to throw an OutOfMemoryError, calling System.gc() won't stop it, because the garbage collector will attempt to f...
How do I make a request using HTTP basic authentication with PHP curl?
I'm building a REST web service client in PHP and at the moment I'm using curl to make requests to the service.
11 Answers
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What is hashCode used for? Is it unique?
...an item? For example I want to identify a picture or a song in the device, and check it whereabout. This could be done if the hashcode given for specific items is unique.
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Padding within inputs breaks width 100%
...for IE box-sizing property depends on IE Document Mode, it works on "IE8 Standards mode" & higher. So it will work in IE8 browser version also if document mode is "IE8 Standards mode". Hope this helps
– Sanjeev
Jun 25 '14 at 8:44
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Eclipse: How do i refresh an entire workspace? F5 doesn't do it
... click somewhere in the project explorer, do Ctrl+A to select all projects and then press F5 to achieve a complete refresh.
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Error: free(): invalid next size (fast):
...rror I'm getting? I'm compiling C++ using g++ on Ubuntu 10.10. It pops up randomly when I run the executable (maybe 2 times in 8 hours, with 10 compiles an hour). However, if I make clean and recompile it goes away most of the time.
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