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How to check if object (variable) is defined in R?

... You win by 52 seconds :) – Dirk Eddelbuettel Feb 20 '12 at 21:51 10 ...
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Scripting TFS Command Line for Get Latest Version, Check Out and Check in, programmatically

I use WinXP, VS 2008 and Team Explorer to connect to Team Foundation Server. 4 Answers ...
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Include constant in string without concatenating

... To use constants inside strings you can use the following method: define( 'ANIMAL', 'turtles' ); $constant = 'constant'; echo "I like {$constant('ANIMAL')}"; How does this work? You can use any string function name and arbitrary parameters One can place any function ...
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Oracle: how to UPSERT (update or insert into a table?)

... The issue is that you have a window in between the insert and the update where another process could successfully fire a delete. I did however use this pattern on a table that never has deletes fired against it. – chotchki ...
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How do you see the entire command history in interactive Python?

... Win10 C:\>python -m pip install readline => Collecting readline \n Downloading https://files.pythonhosted.org/packages/f4/01/2cf081af8d880b44939a5f1b446551a7f8d59eae414277fd0c303757ff1b/readline-6.2.4.1.tar.gz (2.3MB) \...
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How I can delete in VIM all text from current line to end of file?

...iting and saving the file. head hugefile > firstlines (If you are on Windows you can use the Win32 port of head) share | improve this answer | follow | ...
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unable to copy/paste in mingw shell

I just installed MinGW on Windows and I'm unable to copy/paste as I am used to on Linux or even PuTTY. What is the trick for copying and pasting text (e.g. from chrome) into MinGW shell? ...
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How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]

...ins the info you need in the Machine member which contains one of the following values IMAGE_FILE_MACHINE_I386 (0x014c) IMAGE_FILE_MACHINE_IA64 (0x0200) IMAGE_FILE_MACHINE_AMD64 (0x8664) This information should be at a fixed offset in the file, but I'd still recommend traversing the file and che...
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How do I create/edit a Manifest file?

...hat "template". Especially I am adding the operating system keys, e.g. for Win 10 which even VS 2013 doesn't know yet. – Philm Nov 11 '15 at 0:16 ...
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Convert an image to grayscale in HTML/CSS

... Following on from brillout.com's answer, and also Roman Nurik's answer, and relaxing somewhat the the 'no SVG' requirement, you can desaturate images in Firefox using only a single SVG file and some CSS. Your SVG file will look l...