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Persistent invalid graphics state error when using ggplot2
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I ran into this same error and solved it by running:
dev.off()
and then running the plot again. I think the graphics device was messed up earlier somehow by exporting some graphics and it didn't get reset. This worked for me and it's simpler than reinstalling gg...
File being used by another process after using File.Create()
...ated and when it tries to write in to the file it shows file is being used by other process.
– Anmol Rathod
Jul 15 '18 at 20:58
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How do I create a datetime in Python from milliseconds?
I can create a similar Date object in Java by java.util.Date(milliseconds) . How do I create the comparable in Python?
5 A...
jQuery Validate - Enable validation for hidden fields
In the new version of jQuery validation plugin 1.9 by default validation of hidden fields ignored . I'm using CKEditor for textarea input field and it hides the field and replace it with iframe. The field is there, but validation disabled for hidden fields. With validation plugin version 1.8.1 ever...
How to create id with AUTO_INCREMENT on Oracle?
...is now available on Oracle 12c:
create table t1 (
c1 NUMBER GENERATED by default on null as IDENTITY,
c2 VARCHAR2(10)
);
or specify starting and increment values, also preventing any insert into the identity column (GENERATED ALWAYS) (again, Oracle 12c+ only)
create table t1 (
c1...
Extract file basename without path and extension in bash [duplicate]
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Is there a way to combine ##*/ at %.* (by nesting or piping or whatnot) arrive at foo directly?
– bongbang
Nov 26 '14 at 22:09
4
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Which kind of pointer do I use when?
...y and you want to adopt it to the RAII principle. This one was not adopted by the standard.
Unique ownership:
Boost also has a scoped_ptr, which is not copyable and for which you can not specify a deleter. std::unique_ptr is boost::scoped_ptr on steroids and should be your default choice when you n...
Memcache Vs. Memcached [duplicate]
... naming conventions (for those unfamiliar), which explains the frustration by the question asker: For many *nix applications, the piece that does the backend work is called a "daemon" (think "service" in Windows-land), while the interface or client application is what you use to control or access th...
“From View Controller” disappears using UIViewControllerContextTransitioning
...'s view is going to be hidden (removed from the view hierarchy) completely by the end of transition. In other words it means that after the initial presentation animation finishes only the presented view controller's view will be visible and not the presenting view controller's view. For example if ...
Why can a class not be defined as protected?
... default.
Since there is no way to restrict this class being subclassed by only few classes (we cannot restrict class being inherited by only few classes out of all the available classes in a package/outside of a package), there is no use of protected access specifiers for top level classes. Henc...