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How to succinctly write a formula with many variables from a data frame?
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A slightly different approach is to create your formula from a string. In the formula help page you will find the following example :
## Create a formula for a model with a large number of variables:
xnam <- paste("x", 1:25, sep="")
fmla <- as.formula(paste("y ~ ", paste(xnam, col...
Coffeescript — How to create a self-initiating anonymous function?
...ty or useful information to the other answer.
– still_dreaming_1
Feb 5 '15 at 22:37
add a comment
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How to set timeout on python's socket recv method?
...rtunately) up to you to figure out -- it may mean looking for a terminator string, a certain number of bytes, or just waiting for a defined timeout.
– JDM
Jan 24 '13 at 19:07
4
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Xcode Command /usr/bin/codesign failed with exit code 1 : errSecInternalComponent
...ou allowed codesign to access a private key. It's enough to leave an empty string as a password.
– Kamil Szostakowski
Feb 25 '19 at 23:36
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Kill process by name?
...t, err = p.communicate()
gives you ps -A's output in the out variable (a string). You can break it down into lines and loop on them...:
>>> for line in out.splitlines():
... if 'iChat' in line:
... pid = int(line.split(None, 1)[0])
... os.kill(pid, signal.SIGKILL)
...
(you ...
How to run Visual Studio post-build events for debug build only
...too - shell command IF statements are very .. literal ... when it comes to string comparisons.
– gbjbaanb
Oct 7 '13 at 8:11
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Why does substring slicing with index out of range work?
...can still return an empty sequence.
Part of what's confusing here is that strings behave a little differently from lists. Look what happens when you do the same thing to a list:
>>> [0, 1, 2, 3, 4, 5][3]
3
>>> [0, 1, 2, 3, 4, 5][3:4]
[3]
Here the difference is obvious. In the ...
Android; Check if file exists without creating a new one
... This is like that because there is no static method : File.exists(String file) , so you have to instanciate a new File object to access 'Exists' method.
– Giova
Oct 13 '14 at 3:12
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POST request send json data java HttpUrlConnection
...d");
auth.put("tenantName", "adm");
auth.put("passwordCredentials", cred.toString()); // <-- toString()
parent.put("auth", auth.toString()); // <-- toString()
OutputStreamWriter wr= new OutputStreamWriter(con.getOutputStream());
wr.write(parent.toString());
write
JSONObject cr...
How can I add to List
...t you add a number
untypedList.add(200);
// But it will also let you add a String! BAD!
untypedList.add("foo");
// YOU PROBABLY WANT THIS
// This is safer, because it will (partially) check the type of anything you add
List<Number> superclassedList = (List<Number>)(List<?>)list;
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