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Is there still any reason to learn AWK?
... you already know regex it won't take long to pick up the basics, and it's fun to see how things were designed back then. It's rather elegant.
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How to filter None's out of List[Option]?
...ten wants to work with these elements and not just flatten the list out of fun.
– Frank
Apr 11 '12 at 11:38
Yes, I hes...
In Typescript, How to check if a string is Numeric
...y to convert a string to a number is with Number, not parseFloat.
Number('1234') // 1234
Number('9BX9') // NaN
You can also use the unary plus operator if you like shorthand:
+'1234' // 1234
+'9BX9' // NaN
Be careful when checking against NaN (the operator === and !== don't work as expected wi...
How to get the absolute coordinates of a view
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Now that's the kind of function I expected to find. Unfortunately, I must not be using it properly. I realise it was a known bug that getLocationOnScreen gives a null pointer exception in Android v1.5 (the platform I'm coding for), but testing in v...
HTML - Display image after selecting filename [duplicate]
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the demo work for me but in my site(local host) not - > what can be the reason that function (e) not called after i upload image?
– GO VEGAN
Jan 23 '14 at 11:29
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CURL to access a page that requires a login from a different page
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The web site likely uses cookies to store your session information. When you run
curl --user user:pass https://xyz.com/a #works ok
curl https://xyz.com/b #doesn't work
curl is run twice, in two separate sessions. Thus when the se...
Spring Test & Security: How to mock authentication?
...test become part of spring-security (http://docs.spring.io/spring-security/site/docs/4.0.x/reference/htmlsingle/#test, version is the same).
Setting Up is changed: http://docs.spring.io/spring-security/site/docs/4.0.x/reference/htmlsingle/#test-mockmvc
public void setup() {
mvc = MockMvcBuild...
Right to Left support for Twitter Bootstrap 3
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Bootstrap Persian version of the site http://rbootstrap.ir/ Ver.2.3.2
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Get current URL of UIWebView
...r me). This is useful for internal adjustments to the page URL on JS heavy sites that might not use traditional page loads.
– SmartyP
Sep 8 '14 at 19:33
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How do I determine k when using k-means clustering?
...ering
n = 150
g = 6
set.seed(g)
d <- data.frame(x = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))),
y = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))))
mydata<-d
#Plot 3X2 plots
attach(mtcars)
par(mfrow=c(3,2))
#Plot the original dataset
plot(mydata$x,m...