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Sending an HTTP POST request on iOS

...t setURL:[NSURL URLWithString:@"http://www.abcde.com/xyz/login.aspx"]]; Now, set HTTP method (POST or GET). Write this lines as it is in your code. [request setHTTPMethod:@"POST"]; Set HTTP header field with length of the post data. [request setValue:postLength forHTTPHeaderField:@"Content-...
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how do I make a single legend for many subplots with matplotlib?

... I know the lines which I want to put in the legend, but how do I get the lines variable to put in the argument for legend ? – patapouf_ai Apr 10 '17 at 12:51 ...
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How to express a One-To-Many relationship in Django

I'm defining my Django models right now and I realized that there wasn't a OneToManyField in the model field types. I'm sure there's a way to do this, so I'm not sure what I'm missing. I essentially have something like this: ...
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DateTime vs DateTimeOffset

... Whenever we produce a DateTime we do it in UTC (e.g. using DateTime.UtcNow ), and whenever we display one, we convert back from UTC to the user's local time. ...
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How to implement the Android ActionBar back button?

...ress the back button. This should be done in the AndroidManifest.xml too. Now you can enable the back button in the onCreate method of your "child" activity. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getActionBar().setDisplayHomeAsUp...
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How to test code dependent on environment variables using JUnit?

... I know this question is old, but I wanted to say that this is the correct answer. The accepted answer encourages poor design with a hidden dependency on System, whereas this answer encourages a proper design treating System as j...
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How can I list ALL DNS records?

...nswer "${3:-any}" else dig +nocmd "$1" +noall +answer "${2:-any}" fi Now I use dg example.com to get a nice, clean list of DNS records, or dg example.com x to include a bunch of other popular subdomains. grep -vE "${wild_ips}" filters out records that could be the result of a wildcard DNS ent...
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Is returning by rvalue reference more efficient?

...e following Beta_ab Beta::toAB() const { return Beta_ab(1, 1); } Now, it's properly moving a temporary Beta_ab object into the return value of the function. If the compiler can, it will avoid the move altogether, by using RVO (return value optimization). Now, you can do the following Beta...
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Disabling browser print options (headers, footers, margins) from page?

...pport setting printer page margin at all, but all the other major browsers now support it. With the @page directive, you can specify printer margin of the page (which is not the same as normal CSS margin of an HTML element): <html xmlns="http://www.w3.org/1999/xhtml"> <head> <titl...
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How to convert CFStringRef to NSString?

... If you are using ARC, the new casting syntax for this case is now NSString *aNSString = (__bridge NSString *)aCFString – MikeG Dec 15 '11 at 18:10 ...