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Convert a list of data frames into one data frame
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answered Feb 27 '18 at 20:05
joekliegjoeklieg
1,50411 gold badge55 silver badges33 bronze badges
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Create table (structure) from existing table
...* Into <DestinationTableName> From <SourceTableName> Where 1 = 2
Note that this will not copy indexes, keys, etc.
If you want to copy the entire structure, you need to generate a Create Script of the table. You can use that script to create a new table with the same structure. You can...
biggest integer that can be stored in a double
...n IEEE 64-bit doubles without losing precision. An IEEE 64-bit double has 52 bits of mantissa, so I think it's 253:
253 + 1 cannot be stored, because the 1 at the start and the 1 at the end have too many zeros in between.
Anything less than 253 can be stored, with 52 bits explicitly stored in the...
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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