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Adding a column to a data.frame

...cording to column 1 ( h_no ) in that way that the first series of h_no 1,2,3,4 is class 1, the second series of h_no (1 to 7) is class 2 etc. such as indicated in the last column. ...
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What do pty and tty mean?

... 231 "tty" originally meant "teletype" and "pty" means "pseudo-teletype". In UNIX, /dev/tty* is any...
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How can I convert a PFX certificate file for use with Apache on a linux server?

...pdate your Apache configuration file with: <VirtualHost 192.168.0.1:443> ... SSLEngine on SSLCertificateFile /path/to/domain.cer SSLCertificateKeyFile /path/to/domain.key ... </VirtualHost> share ...
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Difference between adjustResize and adjustPan in android?

... 243 From the Android Developer Site link "adjustResize" The activity's main window is always resize...
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Suppressing “is never used” and “is never assigned to” warnings in C#

... | edited May 23 '17 at 12:18 Community♦ 111 silver badge answered Sep 29 '10 at 11:10 ...
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How can I see the current value of my $PATH variable on OS X?

... answered Jan 31 '13 at 1:47 HeatfanJohnHeatfanJohn 5,98622 gold badges2929 silver badges4141 bronze badges ...
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Add data annotations to a class generated by entity framework

... 143 The generated class ItemRequest will always be a partial class. This allows you to write a secon...
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Regular expression matching a multiline block of text

.... ;-) – MiniQuark Feb 25 '09 at 20:36 My impression is that the target files will conform to a definite (and repeatin...
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An “and” operator for an “if” statement in Bash

... William PursellWilliam Pursell 162k4343 gold badges235235 silver badges267267 bronze badges ...
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What is process.env.PORT in Node.js?

what is process.env.PORT || 3000 used for in Node.js? I saw this somewhere: 4 Answers ...