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How to write header row with csv.DictWriter?
...ollections import OrderedDict
ordered_fieldnames = OrderedDict([('field1',None),('field2',None)])
with open(outfile,'wb') as fou:
dw = csv.DictWriter(fou, delimiter='\t', fieldnames=ordered_fieldnames)
dw.writeheader()
# continue on to write data
Instantiating DictWriter requires a f...
StringLength vs MaxLength attributes ASP.NET MVC with Entity Framework EF Code First
...ned from another post, but can't seem to find the documentation for (if anyone can share a link to it on MSDN that would be amazing):
The validation messages associated with these attributes will actually replace placeholders associated with the attributes. For example:
[MaxLength(100, "{0} can h...
std::next_permutation Implementation Explanation
... 4
1 2 4 3
1 3 2 4
1 3 4 2
1 4 2 3
1 4 3 2
2 1 3 4
...
How do we go from one permutation to the next? Firstly, let's look at things a little differently. We can view the elements as digits and the permutations as numbers. Viewing the problem in this way we want to order the permutations/numbers in...
The 'packages' element is not declared
... using asp.net mvc 3 project with vs 2010 I have lots of warnings like the ones below:
5 Answers
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Browse and display files in a git repo without cloning
...of information to be local to git, and at that point you may as well have done a git fetch.
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Java multiline string
...be strings that are just +'d together. Some other options people have mentioned (StringBuilder, String.format, String.join) would only be preferable if you started with an array of strings.
Consider this:
String s = "It was the best of times, it was the worst of times,\n"
+ "it was the ag...
Extending an Object in Javascript
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I have one question: how is the Person() constructor being called when you do new Robot()? It seems to me that you should call that base class constructor instead of doing this.name = name; in the Robot() constructor...
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How to get the contents of a webpage in a shell variable?
...eg. get an img tag in a variable for this link www2.watchop.io/manga2/read/one-piece/1/4 ??
– juggernauthk108
Oct 30 '16 at 9:05
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Validating URL in Java
...ery simplified validation just use regular expressions. However I need someone to suggest a superior or standard API for this, I only recently started searching for it myself.
Note
It has been suggested that URL#toURI() in combination with handling of the exception java.net. URISyntaxException can ...
Prompt Dialog in Windows Forms
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How would one extend this to A) have a cancel button and B) validate the text in the textfield in some way before returning?
– ewok
Jun 26 '12 at 16:08
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