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Is there an MD5 Fixed Point where md5(x) == x?
...nly if there is no fixed point will you have try try every possible input (from the space 2^128)". In other words, you only have to try every possibility if none before that works. So 1.08e28 years, or one lucky guess!
– P Daddy
Jun 18 '09 at 17:07
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Static nested class in Java, why?
... outer = new OuterClass(1); // It is not possible to create outer instance from outside.
}
}
This will output x: 1
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Is it possible to declare two variables of different types in a for loop?
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This answer fulfills the requirements of the answer, but from a readability POV I prefer @MK. 's answer. MK's solution even addresses the scoping by adding the curly braces.
– Trevor Boyd Smith
Jul 5 '16 at 14:54
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What's the difference between subprocess Popen and call (how can I use them)?
I want to call an external program from Python. I have used both Popen() and call() to do that.
2 Answers
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How do I sort a list by different parameters at different timed
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@runaros: Using the comparators from KLE's answer: Collections.sort(/* Collection<Person> */ people, new ChainedComparator(NAME_ASC_ADRESS_DESC, ID_DESC));
– Janus Troelsen
Oct 20 '11 at 8:33
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How to split a String by space
...s just like a regular space in string, and often lurks in copy-pasted text from rich text editors or web pages. They are not handled by .trim() which tests for characters to remove using c <= ' '; \s will not catch them either.
Instead, you can use \p{Blank} but you need to enable unicode charact...
Set a default parameter value for a JavaScript function
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From ES6/ES2015, default parameters are in the language specification.
function read_file(file, delete_after = false) {
// Code
}
just works.
Reference: Default Parameters - MDN
Default function parameters allow for...
Turn a string into a valid filename?
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You can look at the Django framework for how they create a "slug" from arbitrary text. A slug is URL- and filename- friendly.
The Django text utils define a function, slugify(), that's probably the gold standard for this kind of thing. Essentially, their code is the following.
def slugi...
HorizontalScrollView within ScrollView Touch Handling
...of current X coordinate and lastX, if it is larger than 0, touch is moving from left to right, otherwise right to left. And then you save the current X as lastX for next calculation.
– neevek
Aug 23 '12 at 1:25
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New to unit testing, how to write great tests? [closed]
... Presumably the accepted answer has changed. There's an answer from Linx that recommends The art of unit testing by Roy Osherove, manning.com/osherove
– thelem
Oct 24 '14 at 10:39
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