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Tracking CPU and Memory usage per process
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Right click Data Collector Sets->User Defined. Select New->Data Collector Set. Give it a name and select Create manually. Click Next. Select Performance counter. Click Next. Add the performance counters and enter the sample interval. Then under D...
The tilde operator in C
...se of tilde operator :
1. It is used in masking operation , Masking means setting and resetting the values inside any register . for ex :
char mask ;
mask = 1 << 5 ;
It will set mask to a binary value of 10000 and this mask can be used to check the bit value present inside other variable...
parseInt(null, 24) === 23… wait, what?
...ntire string can be decoded. At 37 on there is no longer any valid numeral set that can be generated and NaN is returned.
js> parseInt(null, 36)
1112745
>>> reduce(lambda x, y: x * 36 + y, [(string.digits + string.lowercase).index(x) for x in 'null'])
1112745
...
Simple explanation of clojure protocols
... in object oriented languages such as Java. A protocol defines an abstract set of functions that can be implemented in a concrete way for a given object.
An example:
(defprotocol my-protocol
(foo [x]))
Defines a protocol with one function called "foo" that acts on one parameter "x".
You can...
Is Java really slow?
... likely consider Java fast.
If you do numerical computation on large data sets, or are bound to an execution environment, where CPU resources are limited, where a constant speedup in the scale of 5-10 would be huge. Even a 0.5 speed up might mean a 500 hour reduction for the computation to complete...
Re-raise exception with a different type and message, preserving existing information
...tches the new exception.
By using this feature, the __cause__ attribute is set. The built-in exception handler also knows how to report the exception's “cause” and “context” along with the traceback.
In Python 2, it appears this use case has no good answer (as described by Ian Bicking and N...
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...association. If you want to get standard-conforming behavior, you need to set -fp-model precise with ICC. clang and gcc default to strict conformance w.r.t. reassociation.
– Stephen Canon
Mar 27 '14 at 18:19
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Actual meaning of 'shell=True' in subprocess
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>>> subprocess.call('echo $HOME', shell=True)
/user/khong
0
Setting the shell argument to a true value causes subprocess to spawn an intermediate shell process, and tell it to run the command. In other words, using an intermediate shell means that variables, glob patterns, and other s...
What are good grep tools for Windows? [closed]
... the filename if a file contains a match.
/O Prints character offset before each matching line.
/P Skip files with non-printable characters.
/OFF[LINE] Do not skip files with offline attribute set.
/A:attr Specifies color attribute with two hex digits. See "color /?"
/F:...
Reading/writing an INI file
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@aloneguid I would argue that the large set of available features actually contributed to .NET config files ending up being strange behemoths with a lot of magic in them. They have become "code in the config file," and this leads to a lot of complexity, strange beh...