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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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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...
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...
svn : how to create a branch from certain revision of trunk
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Check out the help command:
svn help copy
-r [--revision] arg : ARG (some commands also take ARG1:ARG2 range)
A revision argument can be one of:
NUMBER revision number
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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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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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Grep only the first match and stop
... you. btw - are all those other arguments necessary that I have in the command? and what if I can't pipe it by chance (just in case).
– Tim Kamm
Dec 30 '12 at 18:48
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How to update bower.json with installed packages?
...list your dependencies:
bower list
Then you should run all install command with param '--save' like this:
bower install bootstrap --save
It's a hard work, but if you have a thousand dependencies, could you create a script to automatize the task.
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