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How do I make a transparent canvas in html5?
...ly invisible but the background of the page body was visible. The drawings from the transparent canvas on top were visible while the opaque canvas below it was not.
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Finding a substring within a list in Python [duplicate]
...*1000
sub = 'abc'
timeit.timeit('[s for s in mylist if sub in s]', setup='from __main__ import mylist, sub', number=100000)
# for me 7.949463844299316 with Python 2.7, 8.568840944994008 with Python 3.4
timeit.timeit('next((s for s in mylist if sub in s), None)', setup='from __main__ import mylist, ...
C char array initialization
...specify it:
char buf = '\0';
The backslash is necessary to disambiguate from character '0'.
char buf = 0;
accomplishes the same thing, but the former is a tad less ambiguous to read, I think.
Secondly, you cannot initialize arrays after they have been defined.
char buf[10];
declares and...
Unittest setUp/tearDown for several tests
...sult)
type(self).runCount += 1
With this trick, when you inherit from this TestCase (instead of from the original unittest.TestCase), you'll also inherit the runCount of 0. Then in the run method, the runCount of the child testcase is checked and incremented. This leaves the runCount varia...
JUnit test with dynamic number of tests
In our project I have several JUnit tests that e.g. take every file from a directory and run a test on it. If I implement a testEveryFileInDirectory method in the TestCase this shows up as only one test that may fail or succeed. But I am interested in the results on each individual file. How c...
Linux command: How to 'find' only text files?
After a few searches from Google, what I come up with is:
16 Answers
16
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Xcode 4.2 - declaration of '…' will not be visible outside of this function warning
I use Apple Reachability class from Apple Sample code
Reachability
1 Answer
1
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How set background drawable programmatically in Android
...int ) is now deprecated in API level 22.
You should use the following code from the support library instead:
ContextCompat.getDrawable(context, R.drawable.ready)
If you refer to the source code of ContextCompat.getDrawable, it gives you something like this:
/**
* Return a drawable object associ...
Why can I access private variables in the copy constructor?
...ide intended behaviours while honouring the post-conditions and invariants from your design.
It's not just the copy constructor either - a great many operations can involve two or more instances of your class: if you're comparing, adding/multiplying/dividing, copy-constructing, cloning, assigning ...
When is the init() function run?
...ler.
A package will be initialised only once even if it is imported from multiple packages.
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