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get dictionary key by value
... value happens to be at the end of the dictionary, it will have to go over all the other values to find it. If you have a number of entries, this will slow your program down.
– Zach Johnson
Mar 14 '10 at 22:41
...
How do you work with an array of jQuery Deferreds?
...data be loaded in a certain order: the root URL, then the schemas, then finally initialize the application with the schemas and urls for the various data objects. As the user navigates the application, data objects are loaded, validated against the schema, and displayed. As the user CRUDs the data...
xUnit.net: Global setup + teardown?
... protected TestsBase()
{
// Do "global" initialization here; Called before every test method.
}
public void Dispose()
{
// Do "global" teardown here; Called after every test method.
}
}
public class DummyTests : TestsBase
{
// Add test methods
}
However, ...
How does the new automatic reference counting mechanism work?
...rty assignments are inexpensive (as discussed here). I know I'm replacing all of my existing Mac GC code with ARC implementations.
As to whether this could be extended to other languages, it seems geared around the reference counting system in Objective-C. It might be difficult to apply this to J...
How do I parse JSON in Android? [duplicate]
...
Android has all the tools you need to parse json built-in. Example follows, no need for GSON or anything like that.
Get your JSON:
Assume you have a json string
String result = "{\"someKey\":\"someValue\"}";
Create a JSONObject:
JS...
HTML5: number input type that takes only integers?
...ields are signed floating-point numbers (for unsigned ints you'll have to fall back to "pattern" validation and thus lose extra features like the up and down arrows for browsers that support it). Is there another input type or perhaps an attribute that would restrict the input to just unsigned integ...
Hidden features of HTML
...ge Contains Both Secure and Non-Secure Items" error message in IE, keeping all your asset requests within the same protocol.
Caveat: When used on a <link> or @import for a stylesheet, IE7 and IE8 download the file twice. All other uses, however, are just fine.
...
What should every developer know about databases? [closed]
...abases that were designed with a single purpose in mind often fail dramatically when they begin to be pushed into a role that's enterprise wide and mission critical.
The second thing developers need to learn about databases is the whole data centric view of the world. The data centric world view i...
Difference between modes a, a+, w, w+, and r+ in built-in open function?
...
I believe you mean the fopen call in the C standard library (which is not a system call)
– Eli Courtwright
Sep 23 '09 at 13:34
15
...
CHECK constraint in MySQL is not working
...ySQL Reference Manual says:
The CHECK clause is parsed but ignored by all storage engines.
Try a trigger...
mysql> delimiter //
mysql> CREATE TRIGGER trig_sd_check BEFORE INSERT ON Customer
-> FOR EACH ROW
-> BEGIN
-> IF NEW.SD<0 THEN
-> SET NEW.SD=0;...