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How can I read command line parameters from an R script?
...et R_Script="C:\Program Files\R-3.0.2\bin\RScript.exe"
%R_Script% exmpl.R 2010-01-28 example 100 > exmpl.batch 2>&1
Alternatively, using Rterm.exe:
set R_TERM="C:\Program Files\R-3.0.2\bin\i386\Rterm.exe"
%R_TERM% --no-restore --no-save --args 2010-01-28 example 100 < exmpl.R > ex...
Look up all descendants of a class in Ruby
...
– Douglas Squirrel
Mar 6 '10 at 20:01
1
singleton_class instead of Class make it much faster (se...
Get the latest record from mongodb collection
...
DigitsDigits
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12
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What makes a SQL statement sargable?
...ction for every row of the table. Much better to use:
WHERE myDate >= '01-01-2008' AND myDate < '01-01-2009'
Some other examples:
Bad: Select ... WHERE isNull(FullName,'Ed Jones') = 'Ed Jones'
Fixed: Select ... WHERE ((FullName = 'Ed Jones') OR (FullName IS NULL))
Bad: Select ... WHERE SU...
Regular expression to match DNS hostname or IP Address?
...o match a valid IP address use the following regex:
(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}
instead of:
([01]?[0-9][0-9]?|2[0-4][0-9]|25[0-5])(\.([01]?[0-9][0-9]?|2[0-4][0-9]|25[0-5])){3}
Explanation
Many regex engine match the first possibility in ...
How to read json file into java with simple JSON library
...|
edited Mar 29 '16 at 17:01
tinlyx
17.7k2323 gold badges7575 silver badges137137 bronze badges
answered...
How to convert local time string to UTC?
...Source code, using local timezone "America/Los_Angeles", for the string "2001-2-3 10:11:12":
import pytz, datetime
local = pytz.timezone ("America/Los_Angeles")
naive = datetime.datetime.strptime ("2001-2-3 10:11:12", "%Y-%m-%d %H:%M:%S")
local_dt = local.localize(naive, is_dst=None)
utc_dt = local...
`find -name` pattern that matches multiple patterns
...ld up
– Jasper Blues
Jan 4 '14 at 8:01
40
You need to surround the two -names with brackets, if y...
Enabling HTTPS on express.js
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– Marcelo Teixeira Ruggeri
May 3 '14 at 1:01
5
express 4 it doesn't work, it works for localhost:80 but...
Convert from MySQL datetime to another format with PHP
...-d H:i:s".
– Rikki
Jan 10 '14 at 17:01
7
does not work for who? Accepted answer will work if you ...