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How to call a shell script from python code?
...ple:
>>> import subprocess
>>> subprocess.call(['sh', './test.sh']) # Thanks @Jim Dennis for suggesting the []
0
>>>
Where test.sh is a simple shell script and 0 is its return value for this run.
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Java 8 Streams: multiple filters vs. complex condition
...hat big.
You can take a look on my GitHub project, where I did performance tests for multiple array iteration options
For small array 10 element throughput ops/s:
For medium 10,000 elements throughput ops/s:
For large array 1,000,000 elements throughput ops/s:
NOTE: tests runs on
8 CPU
1 ...
Fastest way to serialize and deserialize .NET objects
I'm looking for the fastest way to serialize and deserialize .NET objects. Here is what I have so far:
9 Answers
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Skip certain tables with mysqldump
... better for me. I can now import these two files into another database for testing purposes without having to worry about manipulating 9GB of data or running out of disk space.
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NSUserDefaults - How to tell if a key exists
...
@zekel Rather than guessing, I tested this (on iOS 5.1.1), and it definitely detected whether or not a BOOL was present, independent of what the value of said BOOL might be. "objectForKey" returned nil when the BOOL was not present because it had never be...
Best way to test for a variable's existence in PHP; isset() is clearly broken
...ariables as well, on can do a $defined_vars = get_defined_vars(); and then test via array_key_exists('v', $defined_vars);.
– Henrik Opel
Sep 27 '10 at 16:01
1
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How can I escape white space in a bash loop list?
...way. The best approach is to use find -exec properly:
# this is safe
find test -type d -exec echo '{}' +
The other safe approach is to use NUL-terminated list, though this requires that your find support -print0:
# this is safe
while IFS= read -r -d '' n; do
printf '%q\n' "$n"
done < <(f...
How to use if-else option in JSTL
...
Yes, but it's clunky as hell, e.g.
<c:choose>
<c:when test="${condition1}">
...
</c:when>
<c:when test="${condition2}">
...
</c:when>
<c:otherwise>
...
</c:otherwise>
</c:choose>
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Testing whether a value is odd or even
...
I prefer using a bit test:
if(i & 1)
{
// ODD
}
else
{
// EVEN
}
This tests whether the first bit is on which signifies an odd number.
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In Clojure 1.3, How to read and write a file
...ry stuff.
Number 1: how to read an entire file into memory.
(slurp "/tmp/test.txt")
Not recommended when it is a really big file.
Number 2: how to read a file line by line.
(use 'clojure.java.io)
(with-open [rdr (reader "/tmp/test.txt")]
(doseq [line (line-seq rdr)]
(println line)))
Th...