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RSA Public Key format
...SA PUBLIC KEY is closer to the content of a PUBLIC KEY, but you need to offset the start of your ASN.1 structure to reflect the fact that PUBLIC KEY also has an indicator saying which type of key it is (see RFC 3447). You can see this using openssl asn1parse and -strparse 19, as described in this an...
Total size of the contents of all the files in a directory [closed]
...-readable format? When using du -shb (as suggested by this answer), the -b setting seems to override the -h setting.
– Mathias Bynens
Aug 1 '12 at 10:59
6
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Turning multi-line string into single comma-separated
...k it down:
awk is great at handling data broken down into fields
-vORS=, sets the "output record separator" to ,, which is what you wanted
{ print $2 } tells awk to print the second field for every record (line)
file.txt is your filename
sed just gets rid of the trailing , and turns it into a newl...
How to change the Push and Pop animations in a navigation based app
...sitionContext.finalFrame(for: tz)
let fOff = f.offsetBy(dx: f.width, dy: 55)
tz.view.frame = fOff
transitionContext.containerView.insertSubview(tz.view, aboveSubview: fz.view)
UIView.animate(
withD...
Setting custom UITableViewCells height
... object and the length of string could be variable. Due to this, I cannot set a constant height to the cell in the UITableView 's heightForCellAtIndex method. The cell's height depends on the label's height which can be determined using the NSString 's sizeWithFont method. I tried using it, b...
sed or awk: delete n lines following a pattern
... would I mix patterns and numeric ranges in sed (or any similar tool - awk for example)? What I want to do is match certain lines in a file, and delete the next n lines before proceeding, and I want to do that as part of a pipeline.
...
What do all of Scala's symbolic operators mean?
Scala syntax has a lot of symbols. Since these kinds of names are difficult to find using search engines, a comprehensive list of them would be helpful.
...
Overlaying histograms with ggplot2 in R
...ers[1:3],each = 100))
ggplot(dat,aes(x=xx)) +
geom_histogram(data=subset(dat,yy == 'a'),fill = "red", alpha = 0.2) +
geom_histogram(data=subset(dat,yy == 'b'),fill = "blue", alpha = 0.2) +
geom_histogram(data=subset(dat,yy == 'c'),fill = "green", alpha = 0.2)
which produces something...
Hashing a file in Python
...ution 1 was modified in order to use a buffer of 20 * 4096 (PAGE_SIZE) and set buffering parameter to 0. Solution 2 only algorithm was modified (sha256 -> sha1). Result: (1) 3m37.137s (2) 3m30.003s . The native sha1sum in binary mode: 3m31.395s
– bioinfornatics
...
Get the distance between two geo points
...
Location loc1 = new Location("");
loc1.setLatitude(lat1);
loc1.setLongitude(lon1);
Location loc2 = new Location("");
loc2.setLatitude(lat2);
loc2.setLongitude(lon2);
float distanceInMeters = loc1.distanceTo(loc2);
Reference: http://developer.android.com/refere...