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SQL update fields of one table from fields of another one
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238
You can use the non-standard FROM clause.
UPDATE b
SET column1 = a.column1,
column2 = a.colu...
Compare two List objects for equality, ignoring order [duplicate]
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313
If you want them to be really equal (i.e. the same items and the same number of each item), I ...
Python AttributeError: 'module' object has no attribute 'Serial' [duplicate]
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Andrea Corbellini
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answered Jul 9 '12 at 22:21
VGOVGO
1,8572...
How does C compute sin() and other math functions?
...ion or branching is rather clever. But there's no comment at all!
Older 32-bit versions of GCC/glibc used the fsin instruction, which is surprisingly inaccurate for some inputs. There's a fascinating blog post illustrating this with just 2 lines of code.
fdlibm's implementation of sin in pure C ...
Create an empty data.frame
...AlldigEmAll
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3
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Unicode (UTF-8) reading and writing to files in Python
... byte. "\x" tells you that "e1" is in hexadecimal.
When you write
Capit\xc3\xa1n
into your file you have "\xc3" in it. Those are 4 bytes and in your code you read them all. You can see this when you display them:
>>> open('f2').read()
'Capit\\xc3\\xa1n\n'
You can see that the backslas...
How to hash a password
...e use the recommendations from the https://stackoverflow.com/a/10402129/251311 instead.
You can either use
var md5 = new MD5CryptoServiceProvider();
var md5data = md5.ComputeHash(data);
or
var sha1 = new SHA1CryptoServiceProvider();
var sha1data = sha1.ComputeHash(data);
To get data as byte a...
How do you add a Dictionary of items into another Dictionary
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edited Jul 14 '17 at 18:23
Dima
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answered Jun 5 ...
Javascript when to use prototypes
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133
Prototypes are an optimisation.
A great example of using them well is the jQuery library. Eve...
How do you close/hide the Android soft keyboard using Java?
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