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How to do exponentiation in clojure?
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classic recursion (watch this, it blows stack)
(defn exp [x n]
(if (zero? n) 1
(* x (exp x (dec n)))))
tail recursion
(defn exp [x n]
(loop [acc 1 n n]
(if (zero? n) acc
(recur (* x acc) (dec n)))))
functional
(defn exp ...
Finding last occurrence of substring in string, replacing that
...format, and I want to find the last "." character in each one, and replace it with ". - ". I've tried using rfind, but I can't seem to utilize it properly to do this.
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Reverting to a specific commit based on commit id with Git? [duplicate]
With git log , I get a list of commits that I have made so far.
4 Answers
4
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Why no ICloneable?
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ICloneable is considered a bad API now, since it does not specify whether the result is a deep or a shallow copy. I think this is why they do not improve this interface.
You can probably do a typed cloning extension method, but I think it would require a different name ...
How to Decrease Image Brightness in CSS
...s in CSS. I searched a lot but all I've got is about how to change the opacity, but that makes the image more bright.
can anyone help me ?
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pdftk compression option
...elated (lossless, but may display slightly differently):
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dBATCH -dQUIET -sOutputFile=output.pdf input.pdf
Edit: I just discovered another option (for lossless compression), which avoids the nasty gs command. qpdf is ...
Does Java have a using statement?
...follow
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edited Jun 3 '16 at 15:26
answered Jan 6 '10 at 21:17
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Is AsyncTask really conceptually flawed or am I just missing something?
I have investigated this problem for months now, came up with different solutions to it, which I am not happy with since they are all massive hacks. I still cannot believe that a class that flawed in design made it into the framework and no-one is talking about it, so I guess I just must be missing ...
Is it possible to search for a particular filename on GitHub?
I know that the GitHub web interface lets you search all repositories for files with a particular pathname (e.g. searching for path:/app/models/user.rb yields >109k results), but is there a way to search all repositories for filenames independent of their subdirectory location? I tried using as...
Downcasting in Java
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Downcasting is allowed when there is a possibility that it succeeds at run time:
Object o = getSomeObject(),
String s = (String) o; // this is allowed because o could reference a String
In some cases this will not succeed:
Object o = new Object();
String s = (String) ...