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How do I replace NA values with zeros in an R dataframe?
...the mutate and summarize _at and _all function variants can be found here: https://rdrr.io/cran/dplyr/man/summarise_all.html
Additionally, I found helpful demonstrations and collections of examples here: https://blog.exploratory.io/dplyr-0-5-is-awesome-heres-why-be095fd4eb8a
Attributions and Apprec...
How to break/exit from a each() function in JQuery? [duplicate]
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You can use return false;
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Equation (expression) parser with precedence?
...ur desired C code that demonstrates this four function calculator:
http://www.gnu.org/software/bison/manual/html_node/Infix-Calc.html
Look at the generated code, and see that this is not as easy as it sounds. Also, the advantages of using a tool like Bison are 1) you learn something (especially if...
'git status' shows changed files, but 'git diff' doesn't
... Having co-workers who use Windows will help you find out all kinds of fun things about line endings. I think might be cases where "git diff" does show the change from CRLF to LF, though-- it probably depend on your configuration. I haven't worked with Windows in a while, so I don't know what ...
Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
...d a quantifier to each pattern. Also the carriage-return thing is a little funny:
text.replace(/[^a-z0-9]+|\s+/gmi, " ");
edit The \s thing matches \r and \n too.
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Are there any suggestions for developing a C# coding standards / best practices document? [closed]
...ding practices that are adopted (e.g prefixing member variables, camelcase function names). If this exists, and most code conforms to it, then it will pay to formalize its use. Adopting a contrary standard is going to cause more grief than it's worth, even if it's something generally recommended.
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Syntax for creating a two-dimensional array
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The fun part is you can have different columns in different rows as well. For example:- int[][] multi = new int[5][]; multi[0] = new int[10]; multi[1] = new int[6]; multi[2] = new int[9] is also perfectly valid
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Running code in main thread from another thread
...unnable to the uiHandler:
uiHandler.post(runnable);
That's all ;-) Have fun with threads, but don't forget to synchronize them.
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How to read an entire file to a string using C#?
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Not the best function to use, though. As Devendra D. Chavan points out in his answer, StreamReader.ReadToEnd is more efficient.
– Owen Blacker
Jun 3 '14 at 11:48
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Detecting WPF Validation Errors
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Just stumbled over this thread. Very useful little function. Thanks!
– Olav Haugen
Jun 7 '11 at 12:55
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