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“Wrong type argument: commandp” error when binding a lambda to a key
I am getting a "Wrong type argument: commandp, (lambda nil (forward-line 5))" here.
3 Answers
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What is the difference between $(command) and `command` in shell programming?
To store the output of a command as a variable in sh/ksh/bash, you can do either
6 Answers
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Can I add color to bootstrap icons only using CSS?
...r's bootstrap uses Icons by Glyphicons . They are " available in dark gray and white " by default:
14 Answers
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Extracting the last n characters from a string in R
...se R, but it's straight-forward to make a function to do this using substr and nchar:
x <- "some text in a string"
substrRight <- function(x, n){
substr(x, nchar(x)-n+1, nchar(x))
}
substrRight(x, 6)
[1] "string"
substrRight(x, 8)
[1] "a string"
This is vectorised, as @mdsumner point...
Virtual member call in a constructor
...e initializers run in order from the most derived class to the base class, and then constructors run in order from the base class to the most derived class (see Eric Lippert's blog for details as to why this is).
Also in .NET objects do not change type as they are constructed, but start out as the ...
How can I find the data structure that represents mine layout of Minesweeper in memory?
...sample application. I've found this MSDN article on a simple WinDbg command that reveals all the mines but it is old, is not explained in any detail and really isn't what I'm looking for.
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Get value from JToken that may not exist (best practices)
... exactly the behavior you want if you combine it with nullable value types and the ?? operator:
width = jToken.Value<double?>("width") ?? 100;
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JavaScript closures vs. anonymous functions
A friend of mine and I are currently discussing what is a closure in JS and what isn't. We just want to make sure we really understand it correctly.
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Django: reverse accessors for foreign keys clashing
...Mar 20 '14 at 16:12
Daniel RosemanDaniel Roseman
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What are invalid characters in XML
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The only illegal characters are &, < and > (as well as " or ' in attributes).
They're escaped using XML entities, in this case you want &amp; for &.
Really, though, you should use a tool or library that writes XML for you and abstracts this kind of ...