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What is the difference between join and merge in Pandas?
...left.merge(right, on=('key'), suffixes=('_l', '_r'))
key val_l val_r
0 foo 1 4
1 bar 2 5
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How do you log all events fired by an element in jQuery?
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edited Jul 30 '13 at 11:32
Ian Clark
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When should I use nil and NULL in Objective-C?
...epresent an object
– cobbal
Oct 14 '09 at 5:43
41
also, in MacTypes.h there is #define nil NULL
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How do I get the opposite (negation) of a Boolean in Python?
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Mike Graham
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answered Aug 11 '11 at 18:16
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How do I programmatically force an onchange event on an input?
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How to include a quote in a raw Python string
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edited Aug 15 '14 at 4:03
answered Jan 7 '11 at 21:31
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#ifdef vs #if - which is better/safer as a method for enabling/disabling compilation of particular s
... using #if, I can write this
DoSomethingSlowWithTimeout(DEBUG_ENABLED? 5000 : 1000);
... instead of ...
#ifdef DEBUG_MODE
DoSomethingSlowWithTimeout(5000);
#else
DoSomethingSlowWithTimeout(1000);
#endif
Second, you're in a better position if you want to migrate from a #define to a global...
How to determine SSL cert expiration date from a PEM encoded certificate?
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With openssl:
openssl x509 -enddate -noout -in file.pem
The output is on the form:
notAfter=Nov 3 22:23:50 2014 GMT
Also see MikeW's answer for how to easily check whether the certificate has expired or not, or whether it will within a certain...
MVC4 DataType.Date EditorFor won't display date value in Chrome, fine in Internet Explorer
...chaseDate"
name="EstPurchaseDate"
type="date" value="9/28/2012" />
Browsers that support HTML5 such Google Chrome render this input field with a date picker.
In order to correctly display the date, the value must be formatted as 2012-09-28. Quote from the specification:
val...
Sort objects in an array alphabetically on one property of the array
...UpperCase();
return (textA < textB) ? -1 : (textA > textB) ? 1 : 0;
});
note: changing the case (to upper or lower) ensures a case insensitive sort.
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