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How to install gem from GitHub source?

... ERROR: While executing gem ... (NoMethodError) undefined method 'build' for Gem::Package:Module Sounds very cool but I won't be looking into it further. Just wanted to post that it didn't work for me in case someone else...
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Installing R with Homebrew

... I got error: Error: homebrew/science was deprecated. This tap is now empty as all its formulae were migrated. – Menglong Li Jul 3 '18 at 13:24 ...
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Minimal web server using netcat

... From man for nc, -p description: It is an error to use this option in conjunction with the -l option – sbeliakov Nov 24 '16 at 14:59 ...
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Force line-buffering of stdout when piping to tee

...ering -o, --output=MODE adjust standard output stream buffering -e, --error=MODE adjust standard error stream buffering If MODE is 'L' the corresponding stream will be line buffered. This option is invalid with standard input. If MODE is '0' the corresponding stream will be unbuffered. Oth...
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Converting Dictionary to List? [duplicate]

...ied to access the list resulting from dictlist=dict.items(), I then got an error trying to access it like a list: dictlist[i][1]. Python3 doc says: ~~~~ "The objects returned by dict.keys(), dict.values() and dict.items() are view objects. They provide a dynamic view on the dictionary’s entries, ...
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Length of generator output [duplicate]

... Fibonacci numbers. You can get as many Fibonacci numbers as you want by calling next(). If you really need to know the number of items there are, then you can't iterate through them linearly one time anyway, so just use a different data structure such as a regular list. ...
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Java String - See if a string contains only numbers and not letters

...75% strings contain non-digit symbols) Benchmark Mode Cnt Score Error Units testIsDigit thrpt 5 9.275 ± 2.348 ops/s testPattern thrpt 5 2.135 ± 0.697 ops/s testParseLong thrpt 5 0.166 ± 0.021 ops/s ## Test load with 50% valid strings (50% strings contain non-dig...
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Why are Oracle table/column/index names limited to 30 characters?

...RRM which is limited to 255 characters, and which most clients use to make errors visible. I suspect increasing the allowable size of constraint names significantly would impact the ability to report on the violations (especially where a constraint violation has been bubbled up through a few layers ...
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How to increase the vertical split window size in Vim

:vsplit (short form: :vs ) split the Vim viewport vertically. :30vs splits the viewport, making the new window 30 characters wide. Once this 30 char window is created, how would one change it's size to 31 or 29? ...
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How Do You Clear The IRB Console?

... @fanaugen On MacOS, cmd+k will clear all within a terminal tap, if you use tmux to split area of the visual area, ctrl+L will do a better work. – Fan Yer May 19 '17 at 9:06 ...