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How to set an environment variable only for the duration of the script?
On Linux (Ubuntu 11.04) in bash, is it possible to temporarily set an environment variable that will only be different from the normal variable for the duration of the script? For example, in a shell script, making an app that saves to HOME portable by temporarily setting HOME to a folder in the pre...
Force DOM redraw/refresh on Chrome/Mac
...l work for you.
// in jquery
$('#parentOfElementToBeRedrawn').hide().show(0);
// in plain js
document.getElementById('parentOfElementToBeRedrawn').style.display = 'none';
document.getElementById('parentOfElementToBeRedrawn').style.display = 'block';
If this simple redraw doesn't work you can try...
How do I convert a Vector of bytes (u8) to a string
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100
To convert a slice of bytes to a string slice (assuming a UTF-8 encoding):
use std::str;
//
/...
How to append the output to a file?
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answered Mar 17 '11 at 17:30
Mike LewisMike Lewis
58.5k1717 gold badges134134 silver badges109109 bronze badges
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How to force R to use a specified factor level as reference in a regression?
... the relevel() function. Here is an example:
set.seed(123)
x <- rnorm(100)
DF <- data.frame(x = x,
y = 4 + (1.5*x) + rnorm(100, sd = 2),
b = gl(5, 20))
head(DF)
str(DF)
m1 <- lm(y ~ x + b, data = DF)
summary(m1)
Now alter the factor b in DF by use of th...
List files committed for a revision
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phihagphihag
239k6060 gold badges406406 silver badges444444 bronze badges
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How do I get AWS_ACCESS_KEY_ID for Amazon?
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edited Dec 17 '15 at 0:20
New Alexandria
6,07644 gold badges4747 silver badges6969 bronze badges
an...
Add new row to dataframe, at specific row-index, not appended?
...s the (often slow) rbind call:
existingDF <- as.data.frame(matrix(seq(20),nrow=5,ncol=4))
r <- 3
newrow <- seq(4)
insertRow <- function(existingDF, newrow, r) {
existingDF[seq(r+1,nrow(existingDF)+1),] <- existingDF[seq(r,nrow(existingDF)),]
existingDF[r,] <- newrow
existing...
renamed heroku app from website, now it's not found
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answered Sep 30 '11 at 21:04
James WardJames Ward
28.7k99 gold badges4646 silver badges7676 bronze badges
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Convert Object to JSON string
...t is to be converted to JSON string
I got a link http://www.devcurry.com/2010/03/convert-javascript-object-to-json.html
but it need to have json2.js do jQuery has a native method to do this?
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