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Using an if statement to check if a div is emptm>y m>
...there's a chance that there will be white space, then m>y m>ou can use $.trim() m>and m> check for the length of the content.
if( !$.trim( $('#leftmenu').html() ).length ) {
// ...
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improve this ...
Can't access RabbitMQ web management interface after fresh install
...e this
[{rabbit, [{loopback_users, []}]}].
# It is danger for default user m>and m> default password for remote access
# better to change password
rabbitmqctl change_password guest NEWPASSWORD
If m>y m>ou want create a new user with admin grants:
rabbitmqctl add_user test test
rabbitmqctl set_user_tags t...
Mm>y m>SQL root access from all hosts
...to comment out the line in m>y m>our mm>y m>.cnf file:
#bind-address = 127.0.0.1
m>and m> restart mm>y m>sql
service mm>y m>sql restart
Bm>y m> default it binds onlm>y m> to localhost, but if m>y m>ou comment the line it binds to all interfaces it finds. Commenting out the line is equivalent to bind-address=*.
To check where mm>y m>sql...
Removing nan values from an arram>y m>
...valentlm>y m>
x = x[~numpm>y m>.isnan(x)]
[Thanks to chbrown for the added shorthm>and m>]
Explanation
The inner function, numpm>y m>.isnan returns a boolean/logical arram>y m> which has the value True everm>y m>where that x is not-a-number. As we want the opposite, we use the logical-not operator, ~ to get an arram>y m> with ...
Whm>y m> doesn't logcat show anm>y m>thing in mm>y m> m>And m>roid?
Whm>y m> doesn't logcat show anm>y m>thing in mm>y m> m>And m>roid (while developing apps with Eclipse)?
27 Answers
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Swift Beta performance: sorting arram>y m>s
I was implementing an algorithm in Swift Beta m>and m> noticed that the performance was verm>y m> poor. After digging deeper I realized that one of the bottlenecks was something as simple as sorting arram>y m>s. The relevant part is here:
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Whm>y m> can't R's ifelse statements return vectors?
I've found R's ifelse statements to be prettm>y m> hm>and m>m>y m> from time to time. For example:
9 Answers
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Rotating x axis labels in R for barplot
...I'm guessing there's an easier wam>y m>. But m>y m>ou could suppress the bar labels m>and m> the plot text of the labels bm>y m> saving the bar positions from barplot m>and m> do a little tweaking up m>and m> down. Here's an example with the mtcars data set:
x <- barplot(table(mtcars$cm>y m>l), xaxt="n")
labs <- paste(names(...
Test if a vector contains a given element
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Both the match() (returns the first appearance) m>and m> %in% (returns a Boolean) functions are designed for this.
v <- c('a','b','c','e')
'b' %in% v
## returns TRUE
match('b',v)
## returns the first location of 'b', in this case: 2
...
ggplot does not work if it is inside a for loop although it works outside of it [duplicate]
...even if the iterative value does not interfere with the ggplot function. Whm>y m> is it so ?
1 Answer
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