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How can javascript upload a blob?

...hp: <? // pull the raw binary data from the POST array $data = substr($_POST['data'], strpos($_POST['data'], ",") + 1); // decode it $decodedData = base64_decode($data); // print out the raw data, echo ($decodedData); $filename = "test.txt"; // write the data out to the file $fp = fopen($filena...
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Good examples of Not a Functor/Functor/Applicative/Monad?

...onoid; instance Monoid Data.Void where mempty = undefined mappend _ _ = undefined mconcat _ = undefined Since _|_ is a legal value in Haskell, and in fact the only legal value of Data.Void, this meets the Monoid rules. I am unsure what unsafeCoerce has to do with it, because your pro...
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Unique fields that allow nulls in Django

...pty string by providing your own customized model form for Foo with a clean_bar method that turns the empty string into None: class FooForm(forms.ModelForm): class Meta: model = Foo def clean_bar(self): return self.cleaned_data['bar'] or None class FooAdmin(admin.ModelAdmin...
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Any way to replace characters on Swift String?

...n leaves me with and optional string. Original String looks like this: "x86_64" and the new mapping looks like "Optional([\"x\", \"8\", \"6\", \"_\", \"6\", \"4\"])" – John Shelley Oct 19 '15 at 15:07 ...
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nginx server_name wildcard or catch-all

... Change listen option to this in your catch-all server block. (Add default_server) this will take all your non-defined connections (on the specified port). listen 80 default_server; if you want to push everything to index.php if the file or folder does not exist; try_files ...
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Deadly CORS when http://localhost is the origin

... code works for me with POST to LocalHost with Chrome <?php if (isset($_SERVER['HTTP_ORIGIN'])) { //header("Access-Control-Allow-Origin: {$_SERVER['HTTP_ORIGIN']}"); header("Access-Control-Allow-Origin: *"); header('Access-Control-Allow-Credentials: true'); header("Access-Con...
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Objective-C categories in static library

...search for "Other Linker Flags", click the + button, and add '-ObjC'. '-all_load' and '-force_load' are no longer needed. Details: I found some answers on various forums, blogs and apple docs. Now I try make short summary of my searches and experiments. Problem was caused by (citation from apple Tec...
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Can I run multiple programs in a Docker container?

... you to sepcify behaviour for each process such as autorestart=true, stdout_logfile, stderr_logfile etc. Take a look at docs.docker.com/engine/admin/using_supervisord – Andreas Lundgren Aug 12 '16 at 7:39 ...
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How to use single storyboard uiviewcontroller for multiple subclass

... The code of line we are looking for is: object_setClass(AnyObject!, AnyClass!) In Storyboard -> add UIViewController give it a ParentVC class name. class ParentVC: UIViewController { var type: Int? override func awakeFromNib() { if type = 0 { ...
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Hide keyboard when scroll UITableView

...to our UITableViewController class override func scrollViewDidScroll(_ scrollView: UIScrollView) { if !tableView.isDecelerating { view.endEditing(true) } } share | ...