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Passing command line arguments to R CMD BATCH
...CH -blabla my_script.R
commandArgs() will receive -blabla as a character string in this case. See the help for details:
$ R CMD BATCH --help
Usage: R CMD BATCH [options] infile [outfile]
Run R non-interactively with input from infile and place output (stdout
and stderr) to another file. If not ...
Check if value is in select list with JQuery
...ues containing any character, including ] and `\`. Avoid building selector strings from raw text without doing proper CSS-escaping.
– bobince
Feb 12 '10 at 1:28
...
Spring classpath prefix difference
...
The source code of Spring:
public Resource[] getResources(String locationPattern) throws IOException {
Assert.notNull(locationPattern, "Location pattern must not be null");
//CLASSPATH_ALL_URL_PREFIX="classpath*:"
if (locationPattern.startsWith(CLASSPATH_ALL_URL_PREFIX)) {
...
multiprocessing: How do I share a dict among multiple processes?
...of memory and doesn't work for Mac OS. Though my dict only works for plain strings and is immutable currently.
I use linear probing implementation and store keys and values pairs in a separate memory block after the table.
from mmap import mmap
import struct
from timeit import default_timer
from mu...
ThreadStatic v.s. ThreadLocal: is generic better than attribute?
... [ThreadStatic]
static int value = 10;
static void Main(string[] args)
{
value = 25;
Task t1 = Task.Run(() =>
{
value++;
Console.WriteLine("T1: " + value);
});
Task t2 = Task.Ru...
Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
...ated. To control that use the -s parameter that sets the maximum length of strings displayed.
It catches all streams, so you might want to filter that somehow:
strace -ewrite -p $PID 2>&1 | grep "write(1"
shows only descriptor 1 calls. 2>&1 is to redirect STDERR to STDOUT, as str...
Download file from web in Python 3
...hich is: how to download a file from a server when the URL is stored in a string type?
I download files and save it locally using the below code:
import requests
url = 'https://www.python.org/static/img/python-logo.png'
fileName = 'D:\Python\dwnldPythonLogo.png'
req = requests.get(url)
file = op...
How does the Google “Did you mean?” Algorithm work?
...arches that have the shortest Levenshtein distance from the entered search string, then pick the one with the most results.
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How to compare two dates?
...
Use time
Let's say you have the initial dates as strings like these:
date1 = "31/12/2015"
date2 = "01/01/2016"
You can do the following:
newdate1 = time.strptime(date1, "%d/%m/%Y") and newdate2 = time.strptime(date2, "%d/%m/%Y") to convert them to python's date format. The...
What is the difference between gmake and make?
...$@ $< = no input sources with gmake because $< evaluates to an empty string. Worse combinations exist that can result in gcc clobbering files).
– Sean
May 24 '11 at 19:27
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