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Convert a list of data frames into one data frame
... TRUE
My guess is that using do.call("rbind", ...) is going to be the fastest approach that you will find unless you can do something like (a) use a matrices instead of a data.frames and (b) preallocate the final matrix and assign to it rather than growing it.
Edit 1:
Based on Hadley's comment, ...
Get MD5 hash of big files in Python
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Thanks jmanning2k for this important note, a test on 184MB file takes (0m9.230s, 0m2.547s, 0m2.429s) using (128, 8192, 32768), I will use 8192 as the higher value gives non-noticeable affect.
– JustRegisterMe
Jul 17 '09 at 19:33
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How to convert an IPv4 address into a integer in C#?
...3
And indeed, http://1089059683/ works as expected (at least in Windows, tested with IE, Firefox and Chrome; doesn't work on iPhone though).
Here's a test program to show both conversions, including the network/host byte swapping:
using System;
using System.Net;
class App
{
static long ToIn...
Does Django scale? [closed]
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We're doing load testing now. We think we can support 240 concurrent requests (a sustained rate of 120 hits per second 24x7) without any significant degradation in the server performance. That would be 432,000 hits per hour. Response times...
Colorized Ruby output to the terminal [closed]
...equire 'colorize'
puts "I am now red".red
puts "I am now blue".blue
puts "Testing".yellow
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C#: why sign an assembly?
...e assemblies being signed with the same .snk file could be if he used unit testing with code coverage. To be able to do code coverage (at least with the tools built into the testing version of Visual Studio 2005) and if the assemblies are signed, you need to specify what .snk files are used for th...
In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [dupli
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You can use the one below. I tested this with leading zero bytes and with initial negative bytes as well
public static String toHex(byte[] bytes) {
BigInteger bi = new BigInteger(1, bytes);
return String.format("%0" + (bytes.length << 1) +...
Can a constructor in Java be private?
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from a testability point of view - they represent a global state, which is hard to predict (and test)
– Bozho
May 12 '10 at 5:38
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How to pass command line argument to gnuplot?
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I tested it with gnuplot 5.0 by adding to these examples a line like plot 'data' using 0:($1/100), and didn't get what you say. It would be rare, since this version defines the variables ARG0--ARG9, and not $1--$9. I assume you...
How do I find files with a path length greater than 260 characters in Windows?
...to work? Using Win7 64 bit Home Premium, Powershell 2.0 -- when I create a test file with a long name (240 characters) and then rename the directory in which it sits to also have a long name, Get-ChildItems -r * stops seeing the file... only dir /s /b works for me.
– Jonas Heid...