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Getting the parent of a directory in Bash

... and the variant I'm using to get the parent of current working directory: parentdir=$(dirname `pwd`) – TheGrimmScientist Jul 11 '15 at 21:31 ...
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Compiling C++ on remote Linux machine - “clock skew detected” warning

I'm connected to my university's small Linux cluster via PuTTY and WinSCP, transferring files using the latter and compiling and running them with the former. My work so far has been performed in the university's labs, but today I have been doing some work at home that generated an interesting warn...
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How to get a Color from hexadecimal Color String

...olor class method: public static int parseColor (String colorString) From Android documentation: Supported formats are: #RRGGBB #AARRGGBB 'red', 'blue', 'green', 'black', 'white', 'gray', 'cyan', 'magenta', 'yellow', 'lightgray', 'darkgray' AndroidX: String.toColorInt() ...
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get list from pandas dataframe column

... Pandas DataFrame columns are Pandas Series when you pull them out, which you can then call x.tolist() on to turn them into a Python list. Alternatively you cast it with list(x). import pandas as pd data_dict = {'one': pd.Seri...
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postgresql - add boolean column to table set default

... Note that if your table is big this can take a long time and lock the table for the entire time. It's faster to split it into steps: add the column without a default with ALTER TABLE users ADD COLUMN priv_user BOOLEAN;, then UPDATE users SET priv_user = 'f'; and finally if you need...
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How can I view the source code for a function?

...S4 method dispatch system The S4 system is a newer method dispatch system and is an alternative to the S3 system. Here is an example of an S4 function: > library(Matrix) Loading required package: lattice > chol2inv standardGeneric for "chol2inv" defined from package "base" function (x, ...)...
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Find first element in a sequence that matches a predicate

... I am a python newbie and read the docs and the ifilter uses the "yield" method. I assume this means that the predicate is lazily evaluated as we go. i.e, we dont run the predicate through the entire list because I have a predicate function that i...
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Why is document.write considered a “bad practice”?

I know document.write is considered bad practice; and I'm hoping to compile a list of reasons to submit to a 3rd party vendor as to why they shouldn't use document.write in implementations of their analytics code. ...
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Html.Textbox VS Html.TextboxFor

What is the difference between Html.Textbox and Html.TextboxFor? 4 Answers 4 ...
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Gradle, Android and the ANDROID_HOME SDK location

... In /my_current_project/ I've created a file called local.properties and put inside sdk.dir=/my_current_path_to/sdk In the console I need to do set ANDROID_HOME=/my_current_path_to/sdk Hope this helps. shar...