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How do I iterate through each element in an n-dimensional matrix in MATLAB?
...-dimensional matrix in MATLAB. The problem is, I don't know how to do this for an arbitrary number of dimensions. I know I can say
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What is the purpose of .PHONY in a Makefile?
...nds that do not represent physical files in the file system. Good examples for this are the common targets "clean" and "all". Chances are this isn't the case, but you may potentially have a file named clean in your main directory. In such a case Make will be confused because by default the clean tar...
How do I write JSON data to a file?
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You forgot the actual JSON part - data is a dictionary and not yet JSON-encoded. Write it like this for maximum compatibility (Python 2 and 3):
import json
with open('data.json', 'w') as f:
json.dump(data, f)
On a modern s...
jQuery: what is the best way to restrict “number”-only input for textboxes? (allow decimal points)
What is the best way to restrict "number"-only input for textboxes?
40 Answers
40
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Return value in a Bash function
..., with this || construct, an exit code of 0 is considered success and therefore "true". Non-zero is error and therefore false. Think of fun1 || fun2 as shorthand for "if fun1 returns success or fun2 returns success" rather than an operator on the actual return values themselves.
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Is there a concise way to iterate over a stream with indices in Java 8?
...k" only.
One alternative which looks more familiar when you are used to for loops would be to maintain an ad hoc counter using a mutable object, for example an AtomicInteger:
String[] names = {"Sam", "Pamela", "Dave", "Pascal", "Erik"};
AtomicInteger index = new AtomicInteger();
List<String&g...
Convert pem key to ssh-rsa format
I have a certificate in der format, from it with this command I generate a public key:
8 Answers
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How to efficiently concatenate strings in go
...Go 1.10 there is a strings.Builder type, please take a look at this answer for more detail.
Old Way:
Use the bytes package. It has a Buffer type which implements io.Writer.
package main
import (
"bytes"
"fmt"
)
func main() {
var buffer bytes.Buffer
for i := 0; i < 1000; i++...
Git - What is the difference between push.default “matching” and “simple”
I have been using git for a while now, but I have never had to set up a new remote repo myself and I have been curious on doing so. I have been reading tutorials and I am confused on how to get "git push" to work.
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Print a string as hex bytes?
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Your can transform your string to a int generator, apply hex formatting for each element and intercalate with separator:
>>> s = "Hello world !!"
>>> ":".join("{:02x}".format(ord(c)) for c in s)
'48:65:6c:6c:6f:20:77:6f:...