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Django CharField vs TextField
...pecified with a maximum length, and might be more efficient in terms of performance or storage — and text (or similar) types — those are usually limited only by hardcoded implementation limits (not a DB schema).
PostgreSQL 9, specifically, states that "There is no performance difference among t...
How is AngularJS different from jQuery
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While Angular 1 was a framework, Angular 2 is a platform. (ref)
To developers, Angular2 provides some features beyond showing data on screen. For example, using angular2 cli tool can help you "pre-compile" your code and generate necessary javascript code (tree-shaking) to sh...
Difference between partition key, composite key and clustering key in Cassandra?
...e Composite/Compound Key is just any multiple-column key
Further usage information: DATASTAX DOCUMENTATION
Small usage and content examples
SIMPLE KEY:
insert into stackoverflow_simple (key, data) VALUES ('han', 'solo');
select * from stackoverflow_simple where key='han';
table content
key |...
Delegates: Predicate vs. Action vs. Func
...represented by the delegate?" Used in things like List.FindAll.
Action: Perform an action given the arguments. Very general purpose. Not used much in LINQ as it implies side-effects, basically.
Func: Used extensively in LINQ, usually to transform the argument, e.g. by projecting a complex structure ...
jQuery $(“#radioButton”).change(…) not firing during de-selection
...me. Using the class selector prevents having to change the function if the form changes or has a dynamic number of fields. Yay for necro votes! (though now 2 years later jQuery recommends using prop() instead of attr(). api.jquery.com/prop)
– Travis
Mar 16 '13 ...
Java Annotations
...ass in your code, you can access the attributes and act according to the information found there. I don't know any examples in Java but in .NET this is used by the compiler to generate (de)serialization information for classes, determine the memory layout of structures and declare function imports f...
Type.GetType(“namespace.a.b.ClassName”) returns null
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The form used in this answer is also a fully qualified type name according to the MSDN grammar (so it is not a trick). The form is NamespaceTypeName, AssemblyNameSpec where AssemblyNameSpec is the identifier of the assembly witho...
Best way to add comments in erb
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I used to use this format until I noticed it just raised an error on someones computer in my team (we were both using linux, but different distros), regardless I avoid it since..
– vise
May 5 '10 at 21:57
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How to change a django QueryDict to Python Dict?
...}
From my usage this seems to get you a list you can send back to e.g. a form constructor.
EDIT: maybe this isn't the best method. It seems if you want to e.g. write QueryDict to a file for whatever crazy reason, QueryDict.urlencode() is the way to go. To reconstruct the QueryDict you simply do Q...
Compile, Build or Archive problems with Xcode 4 (and dependencies)
...l weeks to cover more general issues with xcode4 (and upgrading projects form older xcode s).
14 Answers
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