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You can't specify target table for update in FROM clause
...you should only be selecting the columns you need in that innermost query, and adding a good WHERE clause to limit the results, too.
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Is the pImpl idiom really used in practice?
I am reading the book "Exceptional C++" by Herb Sutter, and in that book I have learned about the pImpl idiom. Basically, the idea is to create a structure for the private objects of a class and dynamically allocate them to decrease the compilation time (and also hide the private implementatio...
Undoing a git bisect mistake
I'm doing a non-automated git bisect via command line. All is going well until I accidentally hit return on the wrong line in my command history, and rather than running the test, I run 'git bisect good' (or bad). Oops - I don't yet know if this commit should be marked good or bad, yet that's what I...
How do I add a submodule to a sub-directory?
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You go into ~/.janus and run:
git submodule add <git@github ...> snipmate-snippets/snippets/
If you need more information about submodules (or git in general) ProGit is pretty useful.
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How to get Scala List from Java List?
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There's a handy Scala object just for this - scala.collection.JavaConverters
You can do the import and asScala afterwards as follows:
import scala.collection.JavaConverters._
val lst = node.getByXPath(xpath).asScala
lst.foreach{ node...
Increase number of axis ticks
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You can override ggplots default scales by modifying scale_x_continuous and/or scale_y_continuous. For example:
library(ggplot2)
dat <- data.frame(x = rnorm(100), y = rnorm(100))
ggplot(dat, aes(x,y)) +
geom_point()
Gives you this:
And overriding the scales can give you something like...
Can I have an IF block in DOS batch file?
.... You will unfortunately need to create nested blocks of if statements to handle that.
Secondly, that %GPMANAGER_FOUND% == true test looks mighty suspicious to me. I don't know what the environment variable is set to or how you're setting it, but I very much doubt that the code you've shown will p...
Foreign key from one app into another in Django
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Late, I know, but it's mostly a matter of choice and organisation. I have "internal" apps that are not ever intended for external use. They can depend on each other and exist mainly to give me a convenient organisation of my files and namespaces. External apps (eg from Djan...
Recursive directory listing in DOS
...oter information try this:
dir /s /b
(For sure this will work for DOS 6 and later; might have worked prior to that, but I can't recall.)
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How can I set the color of a selected row in DataGrid
... needed. Allowed me to continue to reference an existing style for the DG and change the background brush for a selected row.
– Gatmando
Jan 6 '11 at 14:32
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