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What does .SD stand for in data.table in R
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206
.SD stands for something like "Subset of Data.table". There's no significance to the initial "...
Initializing a two dimensional std::vector
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208
Use the std::vector::vector(count, value) constructor that accepts an initial size and a defau...
How to make the 'cut' command treat same sequental delimiters as one?
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552
Try:
tr -s ' ' <text.txt | cut -d ' ' -f4
From the tr man page:
-s, --squeeze-repeats ...
How can I parse a string with a comma thousand separator to a number?
I have 2,299.00 as a string and I am trying to parse it to a number. I tried using parseFloat , which results in 2. I guess the comma is the problem, but how would I solve this issue the right way? Just remove the comma?
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How do you run your own code alongside Tkinter's event loop?
...inter import *
root = Tk()
def task():
print("hello")
root.after(2000, task) # reschedule event in 2 seconds
root.after(2000, task)
root.mainloop()
Here's the declaration and documentation for the after method:
def after(self, ms, func=None, *args):
"""Call function once after giv...
What are the advantages of Sublime Text over Notepad++ and vice-versa? [closed]
...r) for perpetual use, released under the GPL license, whereas Sublime Text 2 requires a license.
To quote the Sublime Text 2 website:
..a license must be purchased for continued use. There is currently no
enforced time limit for the evaluation.
The same is now true of Sublime Text 3, and a ...
NewLine in object summary
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/// <para>This is line 1</para>
/// <para>This is line 2</para>
/// </summary>
public bool TestLine { get; set; }
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Transparent ARGB hex value
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205
Transparency is controlled by the alpha channel (AA in #AARRGGBB). Maximal value (255 dec, FF ...
Convert JavaScript string in dot notation into an object reference
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26 Answers
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Error: Jump to case label
...In the following code, if foo equals 1, everything is ok, but if it equals 2, we'll accidentally use the i variable which does exist but probably contains garbage.
switch(foo) {
case 1:
int i = 42; // i exists all the way to the end of the switch
dostuff(i);
break;
case 2:
dostu...