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How do I append text to a file?
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I didn't know cat could be used like this! Like writing a journal entry. Also didn't know about what ctrl-d does. Thank you!
– houallet
Aug 15 '18 at 1:10
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Assign multiple columns using := in data.table, by group
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This now works in v1.8.3 on R-Forge. Thanks for highlighting it!
x <- data.table(a = 1:3, b = 1:6)
f <- function(x) {list("hi", "hello")}
x[ , c("col1", "col2") := f(), by = a][]
# a b col1 col2
# 1: 1 1 hi hello
# ...
Lodash - difference between .extend() / .assign() and .merge()
...mpletely overwritten by src's "p" property (they are the exact same object now).
– Kevin Wheeler
Jun 17 '15 at 23:38
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How to make clang compile to llvm IR
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@EliBendersky Do you know how to compile multiple .c and .h files into one human readable IR so that I can run the IR using 'lli theIrFile'? Thanks
– cache
Jul 20 '14 at 18:43
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Matplotlib discrete colorbar
... @GeorgeLiu Indeed you were write ! I did a copy/paste mistake and it is now fxed ! The snippet of code is now running ! Regarding pos I am not entirely sure of why it is here but it is requested by the FuncFormatter()... Maybe someone else can enlighten us about it !
– Enzo...
How to test chrome extensions?
...ert.calledWithMatch(chrome.browserAction.setBadgeText, {
text: "2"
});
Now we can wrap it into mocha's describe..it functions and run from terminal:
$ mocha
background page
✓ should display opened tabs count in button badge
1 passing (98ms)
You can find full example here.
Additionally,...
How to replace all strings to numbers contained in each string in Notepad++?
...your matching pattern, using parentheses ( and ), like that: .*"(\d+)". So now in your replacement you can simply write $1, where $1 references to the value of the 1st capturing group and will return the number for each successful match. If you had two capture groups, for example (.*)="(\d+)", $1 wi...
Setting different color for each series in scatter plot on matplotlib
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I don't know what you mean by 'manually'. You can choose a colourmap and make a colour array easily enough:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.cm as cm
x = np.arange(10)
ys = [i+x+(i*x)**2 for i in ...
What does if __name__ == “__main__”: do?
...n__":
print("m1")
functionA()
print("m2")
print("t2")
Now, figure out what will happen if you remove the __name__ check in foo3.py:
# Suppose this is foo3.py.
import os, sys; sys.path.insert(0, os.path.dirname(__file__)) # needed for some interpreters
def functionA():
prin...
Passing a Bundle on startActivity()?
...e.putString(key,value);
intent.putExtras(bundle);
startActivity(intent);
Now in your NewActivity, you can get this bundle and retrive your value.
Bundle bundle = getArguments();
String value = bundle.getString(key);
You can also pass data through the intent. In your current activity, set intent...