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Efficient way to apply multiple filters to pandas DataFrame or Series
I have a scenario where a user wants to apply several filters to a Pandas DataFrame or Series object. Essentially, I want to efficiently chain a bunch of filtering (comparison operations) together that are specified at run-time by the user.
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What is the theoretical maximum number of open TCP connections that a modern Linux box can have
...a '64K' limit that is often cited, but that is per client per server port, and needs clarifying.
Each TCP/IP packet has basically four fields for addressing. These are:
source_ip source_port destination_ip destination_port
< client > < server >
Inside the...
Adding a regression line on a ggplot
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In general, to provide your own formula you should use arguments x and y that will correspond to values you provided in ggplot() - in this case x will be interpreted as x.plot and y as y.plot. More information about smoothing methods and formula you can find in help page of function stat_smo...
Rails 4 - passing variable to partial
I am following the Ruby on Rails tutorial and have come across a problem while trying to pass variables to partials.
7 Answ...
Git submodule add: “a git directory is found locally” issue
...ually trying to learn how to use git, including the git submodule subcommands.
I already set up a server on which I can host, push and pull git repositories by using SSH.
I created a main git repository "Travail" on this server in which I would like to put all my projects as submodules.
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Checking if an instance's class implements an interface?
... "yes";
}
You can use the "instanceof" operator. To use it, the left operand is a class instance and the right operand is an interface. It returns true if the object implements a particular interface.
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Responsive iframe using Bootstrap
...trap.com/docs/3.3/components/#responsive-embed
– Alexander Schmidt
Aug 24 '17 at 9:36
use one aspect ratio and include...
Replace a value if null or undefined in JavaScript
I have a requirement to apply the ?? C# operator to JavaScript and I don't know how.
Consider this in C#:
5 Answers
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remove all variables except functions
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You can use the following command to clear out ALL variables. Be careful because it you cannot get your variables back.
rm(list=ls(all=TRUE))
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What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
I am transitioning from Java to C++ and have some questions about the long data type. In Java, to hold an integer greater than 2 32 , you would simply write long x; . However, in C++, it seems that long is both a data type and a modifier.
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