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MySQL - Rows to Columns
...temvalue |
+--------+----------+-----------+
| 1 | A | 10 |
| 1 | B | 3 |
| 2 | A | 9 |
| 2 | C | 40 |
+--------+----------+-----------+
This will be our goal, the pretty pivot table:
select * from history_itemvalue_piv...
How to toggle a value in Python
What is the most efficient way to toggle between 0 and 1 ?
17 Answers
17
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How to compute the similarity between two text documents?
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10 Answers
10
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Generate a Hash from string in Javascript
...perty(String.prototype, 'hashCode', {
value: function() {
var hash = 0, i, chr;
for (i = 0; i < this.length; i++) {
chr = this.charCodeAt(i);
hash = ((hash << 5) - hash) + chr;
hash |= 0; // Convert to 32bit integer
}
return hash;
}
});
Source:
htt...
Histogram using gnuplot?
...x,width)=width*floor(x/width)
plot 'datafile' using (bin($1,binwidth)):(1.0) smooth freq with boxes
check out help smooth freq to see why the above makes a histogram
to deal with ranges just set the xrange variable.
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How can I force division to be floating point? Division keeps rounding down to 0?
... I want to calculate a / b , so if I use integer division I'll always get 0 with a remainder of a .
11 Answers
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Why does this go into an infinite loop?
...
+500
Note: Originally I posted C# code in this answer for purposes of illustration, since C# allows you to pass int parameters by referenc...
Is there a Python Library that contains a list of all the ascii characters?
...'
If you want all printable characters:
>>> string.printable
'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;?@[\\]^_`{|}~ \t\n\r\x0b\x0c'
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Difference between decimal, float and double in .NET?
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2310
float and double are floating binary point types. In other words, they represent a number like t...
Bootstrap carousel multiple frames at once
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20
Can this be done with bootstrap 3's carousel? I'm hoping I won't have
to go hunting for yet...