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Encoding as Base64 in Java
....encodeBase64("Test".getBytes());
System.out.println("encodedBytes " + new String(encodedBytes));
byte[] decodedBytes = Base64.decodeBase64(encodedBytes);
System.out.println("decodedBytes " + new String(decodedBytes));
Then read why you shouldn't use sun.* packages.
Update (2016-12-16)
You can...
PHP - Check if two arrays are equal
... The above comment is false. If $b has all the elements $a has plus some extra ones, the two arrays are not equal yet the above code will say they are.
– Ghola
Sep 8 '14 at 12:14
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How do I check which version of NumPy I'm using?
... Rodger's answer recommends Parse the version (and create your own version strings) as recommended in PEP 386 / PEP 440.
– dawg
Apr 2 '14 at 16:09
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Can functions be passed as parameters?
...es:
package main
import "fmt"
// convert types take an int and return a string value.
type convert func(int) string
// value implements convert, returning x as string.
func value(x int) string {
return fmt.Sprintf("%v", x)
}
// quote123 passes 123 to convert func and returns quoted string.
...
Local variables in nested functions
...int during that execution was assigned each of the 'cow', 'dog', and 'cat' strings, but at the end of the function, cage contains that last value 'cat'. Thus, when you call each of the dynamically returned functions, you get the value 'cat' printed.
The work-around is to not rely on closures. You c...
Array.push() if does not exist?
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For an array of strings (but not an array of objects), you can check if an item exists by calling .indexOf() and if it doesn't then just push the item into the array:
var newItem = "NEW_ITEM_TO_ARRAY";
var array = ["OLD_ITEM_1", "OLD_I...
Colon (:) in Python list index [duplicate]
...t=41m40s at around 40:00 he starts explaining that.
Works with tuples and strings, too.
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Replace console output in Python
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An easy solution is just writing "\r" before the string and not adding a newline; if the string never gets shorter this is sufficient...
sys.stdout.write("\rDoing thing %i" % i)
sys.stdout.flush()
Slightly more sophisticated is a progress bar... this is something I am us...
AddRange to a Collection
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I am serious, actually.The main reason is that it's extra cognitive-load, which is often really quite difficult. You're constantly trying to evaluate negative conditions, which is usually relatively hard, you have both branches anyway, it's (IMO) easier to say 'if null' do th...
File system that uses tags rather than folders?
...or files which are tagged with other tags as well as these two tags, their extra tags can appear as directories inside /etc/init.d. If there is a file a.txt with three tags i.e 'etc', 'init.d' & 'asdf' then 'asdf' will appear as directory inside /etc/init.d and full path of a.txt will become /et...