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What do *args and **kwargs mean? [duplicate]

...r **kwargs as the last items in your function definition’s argument list allows that function to accept an arbitrary number of arguments and/or keyword arguments. For example, if you wanted to write a function that returned the sum of all its arguments, no matter how many you supply, you could wr...
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JavaScript pattern for multiple constructors

...mber and types of parameters you pass to it, you'll have to sniff them manually. JavaScript will happily call a function with more or fewer than the declared number of arguments. function foo(a, b) { if (b===undefined) // parameter was omitted in call b= 'some default value'; if (t...
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make: Nothing to be done for `all'

... Sometimes "Nothing to be done for all" error can be caused by spaces before command in makefile rule instead of tab. Please ensure that you use tabs instead of spaces inside of your rules. all: <\t>$(CC) $(CFLAGS) ... instead of all: $(CC) $(CFL...
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What do the arrow icons in Subclipse mean?

...→ Ignored Resources. - A file not under version control. These are typically new files that you have not committed to the repository yet. - A versioned file that needs to be added to the remote repository. These are typically files you have either renamed, or moved to a different directory. - A...
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Resize fields in Django Admin

...awy to this in a form? I did not find a way to set the attrs attribute for all Textareas. – Julian Sep 5 '16 at 11:33 1 ...
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Difference between document.addEventListener and window.addEventListener?

...o events destined for a different object. You should use the one that actually has the event you are interested in. For example, there is a "resize" event on the window object that is not on the document object. For example, the "DOMContentLoaded" event is only on the document object. So basical...
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How do I enable TODO/FIXME/XXX task tags in Eclipse?

In all my years of using Eclipse, I never knew until now that TODO / FIXME / XXX comment tags are supposed to appear in the task list. Apparently this is something that is disabled by default because I have been using those tags for as long as I've been using Eclipse and I have never seen one of the...
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What's the difference between interface and @interface in java?

...rsity, so I'm a little out of touch - at any rate I've been working on a small Java project this week, and using Intellij IDEA as my IDE, for a change of pace from my regular .Net development. ...
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Difference between solr and lucene

... capability to our application. It exposes an easy-to-use API while hiding all the search-related complex operations. Any application can use this library, not just Solr. 3) Solr is built around Lucene. It is not just an http-wrapper around Lucene but has been known to add more arsenal to Lucene. S...
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How can I find the first occurrence of a sub-string in a python string?

... knowledge: rfind and rindex: In general, find and index return the smallest index where the passed-in string starts, and rfind and rindex return the largest index where it starts Most of the string searching algorithms search from left to right, so functions starting with r indicate that the...