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Are global variables in PHP considered bad practice? If so, why?
...e to access values that you need, for example get_query_var() in Wordpress etc.
– user2098467
Oct 23 '15 at 2:29
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Why do we need the “event” keyword while defining events?
...yone can remove other people's event handlers, raise the event themselves, etc - it's an encapsulation disaster.
For more on events (and delegates) read my article on this topic. (At some point I need to update this for C# 4, which changes field-like events very slightly. The gist of it is still co...
Python assigning multiple variables to same value? list behavior
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If you're coming to Python from a language in the C/Java/etc. family, it may help you to stop thinking about a as a "variable", and start thinking of it as a "name".
a, b, and c aren't different variables with equal values; they're different names for the same identical value. Var...
Differences between .NET 4.0 and .NET 4.5 in High level in .NET
...dividual Applications in a Single Worker Process
Multi-Targeting
etc
And for Asp.net 4.5 there is also a long list of improvements:
Asynchronously Reading and Writing HTTP Requests and Responses
Improvements to HttpRequest handling
Asynchronously flushing a response
Su...
Why does the order in which libraries are linked sometimes cause errors in GCC?
... libraries
$ export LD_LIBRARY_PATH=. # not needed if libs go to /usr/lib etc
$ g++ -fpic -shared d.cpp -o libd.so
$ g++ -fpic -shared b.cpp -L. -ld -o libb.so # specifies its dependency!
$ g++ -L. -lb a.cpp # wrong order (works on some distributions)
$ g++ -Wl,--as-needed -L. -lb a.cpp # wrong or...
Importing CSV with line breaks in Excel 2007
...s is a free-text field, which may contain line breaks, commas, quotations, etc. In order to counteract this, I have wrapped the field in double quotes (").
...
How do I combine a background-image and CSS3 gradient on the same element?
...arget{ background-image: url("IMAGE_URL"); }
Background position, sizing etc.
Other properties that would apply to a single image may also be comma separated. If only 1 value is supplied, that will be applied to all stacked images including the gradient. background-size: 40px; will constrain both...
Is there hard evidence of the ROI of unit testing?
...spent learning the testing framework, writing tests, keeping them updated, etc.. will pay for itself, and then some.
11 Ans...
How does the MapReduce sort algorithm work?
...). Output the result in the final sorted partion (i.e. Sorted-A, Sorted-B, etc.)
Once done, combine the sorted partition into a single dataset again. At this point it is just a simple concatenation of n files (where n could be 26 if you are only doing A - Z), etc.
There might be intermediate step...
What are the basic rules and idioms for operator overloading?
...ding: If you provide +, also provide +=, if you provide -, do not omit -=, etc. Andrew Koenig is said to have been the first to observe that the compound assignment operators can be used as a base for their non-compound counterparts. That is, operator + is implemented in terms of +=, - is implemente...