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How to solve PHP error 'Notice: Array to string conversion in…'

...n $_POST['C']. So when you echo that, you are trying to print an array, so all it does is print Array and a notice. To print properly an array, you either loop through it and echo each element, or you can use print_r. Alternatively, if you don't know if it's an array or a string or whatever, you c...
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Replace all whitespace characters

I want to replace all occurrences of white space characters (space, tab, newline) in JavaScript. How to do so? 9 Answer...
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Django filter versus get for single object?

... get() is provided specifically for this case. Use it. Option 2 is almost precisely how the get() method is actually implemented in Django, so there should be no "performance" difference (and the fact that you're thinking about it indicates you're vio...
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Django : How can I see a list of urlpatterns?

... If you want a list of all the urls in your project, first you need to install django-extensions, add it to your settings like this: INSTALLED_APPS = ( ... 'django_extensions', ... ) And then, run this command in your terminal ./manage.py show_...
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(this == null) in C#!

...in sematic checks) in the compiler: it should NOT be possible. You are not allowed to write : base(CheckNull()) if CheckNull is not static, and alike you should not be able to inline an instance-bound lambda. – quetzalcoatl Aug 14 '12 at 0:29 ...
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“Unknown provider: aProvider

...that caused this issue, but I have since been able to find the problem manually. There was a controller function declared on the global scope, instead of using a .controller() call on the application module. So there was something like this: function SomeController( $scope, i18n ) { /* ... */ } ...
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Download File Using Javascript/jQuery

... A webpage cannot open a new tab automatically. To force the browser to download, get the server to send the pdf file with a nonsense MIME-type, such as application/x-please-download-me – Randy the Dev Sep 20 '10 at 7:55 ...
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Good example of livelock?

...ontinue; } // Spouse wasn't hungry, so finally eat spoon.use(); isHungry = false; System.out.printf( "%s: I am stuffed, my darling %s!%n", name, spouse.getName());...
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“The given path's format is not supported.”

...spaces; 'System.IO.Path' is a type not a namespace – All Blond Sep 8 '11 at 13:32 2 @All Blond pu...
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How to declare an array in Python?

... should never refer to anything other than a list", since Python is dynamically typed. *The default built-in Python type is called a list, not an array. It is an ordered container of arbitrary length that can hold a heterogenous collection of objects (their types do not matter and can be freely m...