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Why is “import *” bad?
...clare a new variable. That’s a crucial piece of information for the type system. You say that modern IDEs solve the mistyping problem but that’s simply wrong, and in fact this is a substantial problem in non statically compiled languages, which is why Perl added use strict (JavaScript var). As a...
Converting datetime.date to UTC timestamp in Python
I am dealing with dates in Python and I need to convert them to UTC timestamps to be used
inside Javascript. The following code does not work:
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How to convert an OrderedDict into a regular dict in python3
I am struggling with the following problem:
I want to convert an OrderedDict like this:
8 Answers
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Why I cannot cout a string?
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Use c_str() to convert the std::string to const char *.
cout << "String is : " << text.c_str() << endl ;
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How to spread django unit tests over multiple files?
...gutil snippet will cause the import to fail because the tests get added as sys.modules[packagename]. A quick workaround is to del any that cause problems after the above. (Or you could rename your folders ;) )
– Paul Fenney
Oct 30 '13 at 12:08
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How to let PHP to create subdomain automatically for each user?
...ve but the when I do xyz.mydomain.com it redirects to xyz.mydomain.com/cgi-sys/defaultwebpage.cgi... Do I need to do anything else then steps mentioned above ?
– Ashish Rajan
Apr 1 '11 at 11:06
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How can I make a .NET Windows Forms application that only runs in the System Tray?
What do I need to do to make a Windows Forms application run in the System Tray?
9 Answers
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Can I use if (pointer) instead of if (pointer != NULL)?
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You can; the null pointer is implicitly converted into boolean false while non-null pointers are converted into true. From the C++11 standard, section on Boolean Conversions:
A prvalue of arithmetic, unscoped enumeration, pointer, or pointer to member type can ...
What's the best way to put a c-struct in an NSArray?
...ized methods, object_getInstanceVariable, or valueForKey:(which will often convert these scalar instance variables into NSNumber or NSValue representations).
btw: all the answers you have received are useful, some are better/worse/invalid depending on the context/scenario. specific needs regarding ...
Set transparent background using ImageMagick and commandline prompt
...mageMagick 6.6.9-7 on Ubuntu 12.04.
What worked for me was the following:
convert test.png -transparent white transparent.png
That changed all the white in the test.png to transparent.
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