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How to append something to an array?
...
Some quick benchmarking (each test = 500k appended elements and the results are averages of multiple runs) showed the following:
Firefox 3.6 (Mac):
Small arrays: arr[arr.length] = b is faster (300ms vs. 800ms)
Large arrays: arr.push(b) is faster (500ms...
DialogFragment setCancelable property not working
...le savedInstanceState) {
View view = inflater.inflate(R.layout.dialog_test, container, true);
getDialog().requestWindowFeature(STYLE_NO_TITLE);
getDialog().setCancelable(false);
return view;
}
instead of getDialog().setCancelable(false); you have to use directly setCancelable(fal...
Regular expression to match standard 10 digit phone number
...-*\.*(\d{3})\)?\.*-*\s*(\d{3})\.*-*\s*(\d{4})$
Replace: +1 \($1\) $2-$3
Tested against the following use cases.
18001234567
1 800 123 4567
1-800-123-4567
+18001234567
+1 800 123 4567
+1 (800) 123 4567
1(800)1234567
+1800 1234567
1.8001234567
1.800.123.4567
1--800--123--4567
+1 (800) 123-4567
...
How to list the size of each file and directory and sort by descending size in Bash?
...sdf.2000.gz
2,5M xyz.PT.gz
136K xyz.6000.gz
116K xyz.6000p.gz
88K test.4000.gz
76K test.4000p.gz
44K test.2000.gz
8,0K desc.common.tcl
8,0K wer.2000p.gz
8,0K wer.2000.gz
4,0K ttree.3
Explanation
du displays "disk usage"
h is for "human readable" (both, in sort and in du)
max...
What is __pycache__?
... hidden bytecode files.
On Windows the equivalent command might be (not tested, batch script welcome):
dir * /s/b | findstr __pycache__ | attrib +h +s +r
Which is same as going through the project hiding folders using right-click > hide...
Running unit tests is one scenario (more in comm...
How to append output to the end of a text file
...rator. This will append data from a command to the end of a text file.
To test this try running:
echo "Hi this is a test" >> textfile.txt
Do this a couple of times and then run:
cat textfile.txt
You'll see your text has been appended several times to the textfile.txt file.
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Which is better, number(x) or parseFloat(x)?
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use isNaN() for testing the NaN value, isNaN(NaN) returns true
– jave.web
Feb 6 '14 at 19:52
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Calling shell functions with xargs
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Exporting the function should do it (untested):
export -f echo_var
seq -f "n%04g" 1 100 | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
You can use the builtin printf instead of the external seq:
printf "n%04g\n" {1..100} | xargs -n 1 -P 10 -I {} bash -c...
Passing a dictionary to a function as keyword parameters
... might be helpful to know (questions I had after reading this and went and tested):
The function can have parameters that are not included in the dictionary
You can not override a parameter that is already in the dictionary
The dictionary can not have parameters that aren't in the function.
Exam...
Insert all values of a table into another table in SQL
...an error and roll back the transaction, meaning nothing gets copied. Worth testing though.
– Matt Hamilton
Jun 17 '09 at 21:01
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