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Purpose of returning by const value? [duplicate]
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In the hypothetical situation where you could perform a potentially expensive non-const operation on an object, returning by const-value prevents you from accidentally calling this operation on a temporary. Imagine that + returned a non-const value, and you could write:
(a + b).expensiv...
How to pass command line argument to gnuplot?
I want to use gnuplot to draw figure from data file, say foo.data . Currently, I hardcoded the data file name in the command file, say foo.plt , and run command gnuplot foo.plg to plot data. However, I want to pass the data file name as a command argument, e.g. running command gnuplot foo.plg f...
Why was the arguments.callee.caller property deprecated in JavaScript?
Why was the arguments.callee.caller property deprecated in JavaScript?
4 Answers
4
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Cast to int vs floor
...dited Dec 30 '14 at 21:44
Matt Ball
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answered Jul 21 '10 at 14:39
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Difference between 'new operator' and 'operator new'?
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I usually try to phrase things differently to differentiate between the two a bit better, but it's a good question in any case.
Operator new is a function that allocates raw memory -- at least conceptually, it's not much differen...
Installation error: INSTALL_PARSE_FAILED_MANIFEST_MALFORMED?
I am developing a small application that lists all the applications present/ installed on the android device. But I'm getting the below error while i'm trying to run the code.
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How do I determine the size of my array in C?
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It should be the case with all compilers, since the results of sizeof is defined as a compile-time constant.
– Mark Harrison
Sep 22 '13 at 5:39
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Error: “dictionary update sequence element #0 has length 1; 2 is required” on Django 1.4
...stance, the following functions throw the error from the question:
url(r'^foo/(?P<bar>[A-Za-z]+)/$', views.FooBar.as_view(), 'foo')
path('foo/{slug:bar}/', views.FooBar, 'foo')
But these actually work:
url(r'^foo/(?P<bar>[A-Za-z]+)/$', views.FooBar.as_view(), name='foo')
path('foo/{s...
Why use Object.prototype.hasOwnProperty.call(myObj, prop) instead of myObj.hasOwnProperty(prop)?
...y reference.
And since we are at it, why do we define this function at all?
See above.
Is it
just a question of shortcuts and local caching of property access for
(slight) performance gains...
It may make it quicker in theory, as the [[Prototype]] chain doesn't have to be followed, ...
Restful way for deleting a bunch of items
...because you don't need any redirects. Incorporating AJAX you could do this all without leaving the page.
– rojoca
Mar 15 '10 at 19:40
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