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How to make a cross-module variable?
...as if a global from any other module that includes __builtin__ -- which is all of them, by default.
a.py contains
print foo
b.py contains
import __builtin__
__builtin__.foo = 1
import a
The result is that "1" is printed.
Edit: The __builtin__ module is available as the local symbol __builtin...
Tracking the script execution time in PHP
...";
echo "It spent " . rutime($ru, $rustart, "stime") .
" ms in system calls\n";
Note that you don't need to calculate a difference if you are spawning a php instance for every test.
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im...
SQL RANK() versus ROW_NUMBER()
...ular ordering value.
RANK and DENSE_RANK are deterministic in this case, all rows with the same value for both the ordering and partitioning columns will end up with an equal result, whereas ROW_NUMBER will arbitrarily (non deterministically) assign an incrementing result to the tied rows.
Examp...
Unittest setUp/tearDown for several tests
...ably going to be to create your own derived TestSuite and override run(). All other calls would be handled by the parent, and run would call your setup and teardown code around a call up to the parent's run method.
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How to set time zone of a java.util.Date?
... @BrDaHa is correct.You'll need to TimeZone.setDefault() before calling getTime() so that the new date object will be in the time zone that you want. In JDK 1.8, Calendar.getTime() calls return new Date(getTimeInMillis());.
– jpllosa
May 9 '17 at 9:29...
What are the differences between Rust's `String` and `str`?
...tr most commonly2 appears as &str: a reference to some UTF-8 data, normally called a "string slice" or just a "slice". A slice is just a view onto some data, and that data can be anywhere, e.g.
In static storage: a string literal "foo" is a &'static str. The data is hardcoded into the execu...
How can I pass a parameter to a Java Thread?
...new Thread(new MyRunnable(parameter));
t.start();
This answer is basically the same as this similar question: How to pass parameters to a Thread object
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Is there a simple way to convert C++ enum to string?
... +1, GCCXML looks very nice! (Although I almost -1ed as I initially misread this as a suggestion to use the above verbose XML syntax to encode your enum -- a solution which reeks of overengineering!)
– j_random_hacker
Mar 12 '09 at 9:46
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What does new self(); mean in PHP?
... the parent class
The first situation would look like this (I've removed all non-necessary code, for this example -- you'll have to add it back to get the singleton behavior)* :
class MyParentClass {
}
class MyChildClass extends MyParentClass {
public static function getInstance() {
...
Python memory usage of numpy arrays
...
The field nbytes will give you the size in bytes of all the elements of the array in a numpy.array:
size_in_bytes = my_numpy_array.nbytes
Notice that this does not measures "non-element attributes of the array object" so the actual size in bytes can be a few bytes larger th...