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Not able to access adb in OS X through Terminal, “command not found”
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The problem is: adb is not in your PATH. This is where the shell looks for executables. You can check your current PATH with echo $PATH.
Bash will first try to look for a binary called adb in your Path, and not in the current directory. Therefore, if you are currently in the platform-tools direc...
How to take column-slices of dataframe in pandas
... to select both rows and columns. The labels being the values of the index or the columns. Slicing with .loc includes the last element.
Let's assume we have a DataFrame with the following columns:
foo, bar, quz, ant, cat, sat, dat.
# selects all rows and all columns beginning at 'foo' up to...
npm can't find package.json
...express 2.5.8 that I've downloaded, but all of the apps throw the same error:
25 Answers
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Find nearest value in numpy array
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import numpy as np
def find_nearest(array, value):
array = np.asarray(array)
idx = (np.abs(array - value)).argmin()
return array[idx]
array = np.random.random(10)
print(array)
# [ 0.21069679 0.61290182 0.63425412 ...
Faster s3 bucket duplication
I have been trying to find a better command line tool for duplicating buckets than s3cmd . s3cmd can duplicate buckets without having to download and upload each file. The command I normally run to duplicate buckets using s3cmd is:
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Open Cygwin at a specific folder
How can I create a Cygwin shortcut that will open Cygwin at a specific folder? This would obviate having to type
28 Answers...
How to declare variable and use it in the same Oracle SQL script?
...pts.
The first is to use VAR, to declare a bind variable. The mechanism for assigning values to a VAR is with an EXEC call:
SQL> var name varchar2(20)
SQL> exec :name := 'SALES'
PL/SQL procedure successfully completed.
SQL> select * from dept
2 where dname = :name
3 /
DEPTNO...
What does “:=” do?
...'s not exactly possible to google its use without knowing the proper name for it.
10 Answers
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How to view file diff in git before commit
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If you want to see what you haven't git added yet:
git diff myfile.txt
or if you want to see already added changes
git diff --cached myfile.txt
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What is the difference between UTF-8 and Unicode?
I have heard conflicting opinions from people - according to the Wikipedia UTF-8 page.
15 Answers
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