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Move capture in lambda
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answered Dec 18 '13 at 21:57
Ralph TandetzkyRalph Tandetzky
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python pandas dataframe to dictionary
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158
See the docs for to_dict. You can use it like this:
df.set_index('id').to_dict()
And if you ...
Coding Practices which enable the compiler/optimizer to make a faster program
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54
Write to local variables and not output arguments! This can be a huge help for getting around a...
Printf width specifier to maintain precision of floating-point value
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double OneSeventh = 1.0/7.0;
printf("%.*e\n", Digs, OneSeventh);
// 1.428571428571428492127e-01
But let's dig deeper ...
Mathematically, the answer is "0.142857 142857 142857 ...", but we are using finite precision floating point numbers.
Let's assume IEEE 754 double-precision binary.
So the...
How to check for valid email address? [duplicate]
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Acumenus
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answered Nov 5 '11 at 19:12
ThomasThomas
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How to get first character of a string in SQL?
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455
LEFT(colName, 1) will also do this, also. It's equivalent to SUBSTRING(colName, 1, 1).
I li...
What causes imported Maven project in Eclipse to use Java 1.5 instead of Java 1.6 by default and how
I imported a Maven project and it used Java 1.5 even though I have 1.6 configured as my Eclipse default Preferences->Java->Installed JREs .
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How do I get the current time zone of MySQL?
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235
From the manual (section 9.6):
The current values of the global and client-specific time zon...
JavaScript seconds to time string with format hh:mm:ss
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596
String.prototype.toHHMMSS = function () {
var sec_num = parseInt(this, 10); // don't forge...