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Swift Beta performance: sorting arrays
...ic const uint64_t NANOS_PER_SEC = 1000ULL * NANOS_PER_MSEC;
mach_timebase_info_data_t timebase_info;
uint64_t abs_to_nanos(uint64_t abs) {
if ( timebase_info.denom == 0 ) {
(void)mach_timebase_info(&timebase_info);
}
return abs * timebase_info.numer / timebase_info.denom;
...
Difference between \b and \B in regex
...rs (i.e. \W\W).
Example: \B.\B matches b in abc
See regular-expressions.info for more great regex info
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Remove unnecessary svn:mergeinfo properties
...e stuff in my repository Subversion wants to add/change a lot of svn:mergeinfo properties to files that are totally unrelated to the things that I want to merge.
...
How do I print a list of “Build Settings” in Xcode project?
... YES
DEBUGGING_SYMBOLS YES
DEBUG_INFORMATION_FORMAT dwarf-with-dsym
DEPLOYMENT_LOCATION YES
DEPLOYMENT_POSTPROCESSING YES
DERIVED_FILES_DIR "/Users/username/Library/Developer/...
Relationship between SciPy and NumPy
...f sym_pos:
posv, = get_lapack_funcs(('posv',),(a1,b1))
c,x,info = posv(a1,b1,
lower = lower,
overwrite_a=overwrite_a,
overwrite_b=overwrite_b)
else:
gesv, = get_lapack_funcs(('gesv',),(a1,b1))
...
What is makeinfo, and how do I get it?
...d and its not found in your path. My terminal says you need to install 'texinfo' package.
sudo apt-get install texinfo
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Logging uncaught exceptions in Python
...port sys
>>> def foo(exctype, value, tb):
... print 'My Error Information'
... print 'Type:', exctype
... print 'Value:', value
... print 'Traceback:', tb
...
Override sys.excepthook:
>>> sys.excepthook = foo
Commit obvious syntax error (leave out the colon) and ...
How can I create a two dimensional array in JavaScript?
... Array.from(Array(2), () => new Array(4));
arr[0][0] = 'foo';
console.info(arr);
The same trick can be used to Create a JavaScript array containing 1...N
Alternatively (but more inefficient 12% with n = 10,000)
Array(2).fill(null).map(() => Array(4))
The performance decrease com...
Use numpy array in shared memory for multiprocessing
...multiprocessing as mp
from contextlib import closing
import numpy as np
info = mp.get_logger().info
def main():
logger = mp.log_to_stderr()
logger.setLevel(logging.INFO)
# create shared array
N, M = 100, 11
shared_arr = mp.Array(ctypes.c_double, N)
arr = tonumpyarray(sha...
What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
...ence to an instance of class String, and is derived from a CONSTANT_String_info structure (§4.4.3) in the binary representation of a class or interface. The CONSTANT_String_info structure gives the sequence of Unicode code points constituting the string literal.
The Java programming language r...