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How to get the position of a character in Python?
...the search string isn't found. find() returns -1 and index() raises ValueError.
Using find()
>>> myString = 'Position of a character'
>>> myString.find('s')
2
>>> myString.find('x')
-1
Using index()
>>> myString = 'Position of a character'
>>> my...
How do I use grep to search the current directory for all files having the a string “hello” yet disp
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grep -l hello **/*.{h,cc}
You might want to shopt -s nullglob to avoid error messages if there are no .h or no .cc files.
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PHP Regex to get youtube video ID?
...can use regexes for just about anything, but they are very easy to make an error in, so if there are PHP functions specifically for what you are trying to accomplish, use those.)
parse_url takes a string and cuts it up into an array that has a bunch of info. You can work with this array, or you can...
Catching multiple exception types in one catch block
I'd like a cleaner way to obtain the following functionality, to catch AError and BError in one block:
11 Answers
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Turning off auto indent when pasting text into vim
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edited Feb 17 '19 at 0:05
Daithí
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answered Ju...
Python unittest - opposite of assertRaises?
...er9876 is conceptually flawed: if you test for the non-raising of say ValueError, but ValueError is instead raised, your test must exit with a failure condition, not an error one. On the other hand, if in running the same code you would raise a KeyError, that would be an error, not a failure. In pyt...
What to do about Eclipse's “No repository found containing: …” error messages?
...be OK.
At least this trick resolved my problems similar like this:
An error occurred while collecting items to be installed session
context was:(profile=epp.package.jee,
phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=,
action=). No repository found containing:
osgi...
How to use QueryPerformanceCounter?
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#include <windows.h>
double PCFreq = 0.0;
__int64 CounterStart = 0;
void StartCounter()
{
LARGE_INTEGER li;
if(!QueryPerformanceFrequency(&li))
cout << "QueryPerformanceFrequency failed!\n";
PCFreq = double(li.QuadPart)/1000.0;
QueryP...
How to use sed to remove the last n lines of a file
I want to remove some n lines from the end of a file. Can this be done using sed?
22 Answers
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How do I get an apk file from an Android device?
...t $2}')"; mv base.apk $i.apk 2&> /dev/null ;done
If you get "adb: error: failed to stat remote object" that indicates you don't have the needed permissions. I ran this on a NON-rooted Moto Z2 and was able to download ALL the APKs I did not uninstall (see below) except youtube.
adb shell p...