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TypeError: sequence item 0: expected string, int found
...be unicode strings and therefore may cause the str to throw a UnicodeEncodeError error. In that case, replace the function str by the function unicode.
For example, assume the string Libië (Dutch for Libya), represented in Python as the unicode string u'Libi\xeb':
print str(u'Libi\xeb')
throws ...
How to apply a function to two columns of Pandas dataframe
...]:x[2] + 1] and df['col_3'] = df.apply(get_sublist, axis=1) gives 'ValueError: operands could not be broadcast together with shapes (2) (3)'
– bigbug
Nov 16 '12 at 7:11
4
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Why should I use a pointer rather than the object itself?
... by the amount of members in the initializer
arr = { 1, 2, 3, 4, 5 }; // ERROR
On the other hand, you can do whatever you want with pointers. Unfortunately, because the distinction between pointers and arrays are hand-waved in Java and C#, beginners don't understand the difference.
3. Polym...
Resharper- Find all unused classes
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First enable "Analyze Errors In Solution" (right-click on the Resharper icon in the status bar).
Then right-click the solution node and select "Find Code issues". In the "Inspection results" tool window you can group by "Issue type" and look for ...
How to remove elements from a generic list while iterating over it?
... dreaded "Collection was modified; enumeration operation may not execute." error. The compiler makes a copy of "list", so that you can safely do the remove on the array.
While this pattern is not super efficient, it has a natural feel and is flexible enough for almost any situation. Such as when y...
Handler is abstract ,cannot be instantiated
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@Glenn--, srsly, this just solved all manner of other errors in my code. ++ to this answer!
– Joel Balmer
Mar 12 '14 at 22:28
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Creating an abstract class in Objective-C
...NSInvalidAbstractInvocation(). Calling an abstract method is a programming error, which is why it throws an exception. Abstract factories are commonly implemented as class clusters.
– quellish
Aug 2 '14 at 23:40
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Set a default parameter value for a JavaScript function
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@SiPlus and you got extra reference errors for free of charge while trying to use undefined objects :p Even while it may work with some browsers and might be faster, null is still an object and undefined is reference to primitive type that is trying to tell tha...
Is there a “vim runtime log”?
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:messages shows all warnings, errors, and informational messages that appeared (possibly briefly) in the vim statusline.
:echo errmsg prints the most recent error message.
g< is another feature few people know about. From :help g<:
The g< c...
Rails raw SQL example
...ails? Because When I deploy this code in heroku,there is a request timeout error.I think this will be faster if I use raw sql.
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