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Example use of “continue” statement in Python?
... the past three or four days, why would I ever need a 'continue' statement and then I run into this post which in turn helps me with some QA — many thanks!
– Freddy
Mar 10 '16 at 5:56
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How to printf “unsigned long” in C?
I can never understand how to print unsigned long datatype in C.
8 Answers
8
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How to define @Value as optional
... limited to plain strings as default values. You can use SPEL expressions, and a simple SPEL expression to return null is:
@Value("${myValue:#{null}}")
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JavaScriptSerializer - JSON serialization of enum as string
I have a class that contains an enum property, and upon serializing the object using JavaScriptSerializer , my json result contains the integer value of the enumeration rather than its string "name". Is there a way to get the enum as a string in my json without having to create a custom Jav...
Inject errors into already validated form?
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Form._errors can be treated like a standard dictionary. It's considered good form to use the ErrorList class, and to append errors to the existing list:
from django.forms.utils import ErrorList
errors = form._errors.setdefault("myfield", ErrorList())
errors.app...
How do I initialize a TypeScript object with a JSON object
...hots at this to show a few different ways. They are by no means "complete" and as a disclaimer, I don't think it's a good idea to do it like this. Also the code isn't too clean since I just typed it together rather quickly.
Also as a note: Of course deserializable classes need to have default const...
How do I find the .NET version?
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Just type any one of the below commands to give you the latest version in the first line.
1. CSC
2. GACUTIL /l ?
3. CLRVER
You can only run these from the Visual Studio Command prompt if you have Visual Studio installed, or else if you have the .NET framewo...
html tables: thead vs th
...HTML table.
The thead element should be used in conjunction with the tbody and tfoot elements.
More : thead
You use <thead> to encapsulate an entire row (or rows) to designate them as the Table Header.
According to the spec,
"This division enables user agents to
support scrolling o...
R data formats: RData, Rda, Rds etc
What are the main differences between .RData, .Rda and .Rds files?
2 Answers
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How to invert a grep expression
The following grep expression successfully lists all the .exe and .html files in the current directory and sub directories.
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