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Why does Math.round(0.49999999999999994) return 1?
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Summary
In Java 6 (and presumably earlier), round(x) is implemented as floor(x+0.5).1 This is a specification bug, for precisely this one pathological case.2 Java 7 no longer mandates this broken implementation.3
The problem
0.5+0.49999999999999994 i...
How to display gpg key details without importing it?
...e to view the details of the gpg key as it comes in the file. Is this possible without importing it into a key ring?
8 Answ...
How to remove duplicate values from a multi-dimensional array in PHP
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Here is another way. No intermediate variables are saved.
We used this to de-duplicate results from a variety of overlapping queries.
$input = array_map("unserialize", array_unique(array_map("serialize", $input)));
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How to diff a commit with its parent?
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mipadimipadi
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Reading a binary file with python
I find particularly difficult reading binary file with Python. Can you give me a hand?
I need to read this file, which in Fortran 90 is easily read by
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Create a dictionary with list comprehension
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Use a dict comprehension:
{key: value for (key, value) in iterable}
Note: this is for Python 3.x (and 2.7 upwards). Formerly in Python 2.6 and earlier, the dict built-in could receive an iterable of key/value pairs, so you can pass it a list comprehension or generator expression. For e...
How to merge remote changes at GitHub?
I'm getting following error, whn trying first Github push:
8 Answers
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Cannot open backup device. Operating System error 5
Below is the query that I am using to backup (create a .bak ) my database.
21 Answers
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Why doesn't this code simply print letters A to Z?
This snippet gives the following output (newlines are replaced by spaces):
13 Answers
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What to do with commit made in a detached head
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Create a branch where you are, then switch to master and merge it:
git branch my-temporary-work
git checkout master
git merge my-temporary-work
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