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pandas: filter rows of DataFrame with operator chaining
...t operations in pandas can be accomplished with operator chaining ( groupby , aggregate , apply , etc), but the only way I've found to filter rows is via normal bracket indexing
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Creating and throwing new exception
...ot found."
}
To throw a general exception use the throw command followed by a string.
throw "Error trying to do a task"
When used inside a catch, you can provide additional information about what triggered the error
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Abstract functions in Swift Language
... Alternatively you can use assert(false, "This method must be overriden by the subclass").
– Erik
Jun 8 '14 at 20:20
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duplicate MIME type “text/html”?
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For the option gzip_types, the mime-type text/html is always included by default, so you don't need to specify it explicitly.
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check android application is in foreground or not? [duplicate]
...eover ActivityManager usage for background/foreground check is discouraged by Android authors. You may check my following answer for the details: stackoverflow.com/a/5862048/648313
– Idolon
May 8 '12 at 15:00
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What is the perfect counterpart in Python for “while not EOF”
... 1024), b''):
do_something()
where chunk will contain up to 1024 bytes at a time from the file, and iteration stops when openfileobject.read(1024) starts returning empty byte strings.
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How to create SBT project with IntelliJ Idea?
...sbt-idea" % "1.6.0")
Use gen-idea in sbt to create IDEA project files.
By default, classifiers (i.e. sources and javadocs) of sbt and library dependencies are loaded if found and references added to IDEA project files. If you don't want to download/reference them, use command gen-idea no-classif...
instanceof Vs getClass( )
...Apart from that, I don't understand what you are asking. What do you mean by "infer the usage ..."??? Code either uses these things, or it doesn't.
– Stephen C
Nov 30 '14 at 2:40
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Associativity of “in” in Python?
...what version of Python generated this, but Python 3.2 apparently has a new bytecode: JUMP_IF_FALSE_OR_POP, which shortens the sequence by one instruction from 13 to 12. Cool answer - thanks!!
– Dave
Sep 30 '12 at 20:23
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How to compare a local git branch with its remote branch?
...On new GitLens tab > Repositories: There is a list of all files changed by commits ahead with a side-by-side preview on click.
– Traxidus Wolf
Jun 28 at 9:59
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