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How do I run IDEA IntelliJ on Mac OS X with JDK 7?
I use Mac OS X 10.8.2, and use JDK 7. Now I downloaded the latest version of IDEA IntelliJ, 11. But it doesn't seem to start without JDK 6. Is there any workaround?
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How to convert a data frame column to numeric type?
...4 d 4
5 NA 5 5 e 5
Warning message:
In eval(expr, envir, enclos) : NAs introduced by coercion
but if you do same thing on fake_char and char_fac, you'll be lucky, and get away with no NA's:
> transform(d, fake_char = as.numeric(fake_char),
char_fac...
Enforcing the type of the indexed members of a Typescript object?
... Typescript object, and enforce that all of the keys map to strings. For example:
8 Answers
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How to remove space between axis & area-plot in ggplot2?
...or further possibilities in the latest versions of ggplot2.
From ?scale_x_continuous about the expand-argument:
Vector of range expansion constants used to add some padding around
the data, to ensure that they are placed some distance away from the
axes. The defaults are to expand the sca...
Powershell v3 Invoke-WebRequest HTTPS error
.../connect.microsoft.com/PowerShell/feedback/details/419466/new-webserviceproxy-needs-force-parameter-to-ignore-ssl-errors
Basically, in your PowerShell script:
add-type @"
using System.Net;
using System.Security.Cryptography.X509Certificates;
public class TrustAllCertsPolicy : ICertific...
How to do parallel programming in Python?
...ll spawn one process for each CPU core on your machine. Each CPU core can execute one process simultaneously.
If you want to map a list to a single function you would do this:
args = [A, B]
results = pool.map(solve1, args)
Don't use threads because the GIL locks any operations on python objects....
How can I convert comma separated string into a List
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@LiquidPony in this implementation yes as the Select extension in this case returns IEnumerable<Int32> and it is not list. However list has a constructor accepting another collection as source.
– Oybek
Feb 15 '12 at 21:07
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When to use in vs ref vs out
... the ref and out keywords (that has been asked before ) and the best explanation seems to be that ref == in and out , what are some (hypothetical or code) examples where I should always use out and not ref .
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Compare two dates with JavaScript
...an, and not in the past using JavaScript? The values will be coming from text boxes.
38 Answers
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Exception.Message vs Exception.ToString()
I have code that is logging Exception.Message . However, I read an article which states that it's better to use Exception.ToString() . With the latter, you retain more crucial information about the error.
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