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E731 do not assign a lambda expression, use a def

...tead of the generic '<lambda>'. This is more useful for tracebacks and string representations in general. The use of the assignment statement eliminates the sole benefit a lambda expression can offer over an explicit def statement (i.e. that it can be embedded inside a larger expressio...
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Vim delete blank lines

What command can I run to remove blank lines in Vim? 14 Answers 14 ...
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Non greedy (reluctant) regex matching in sed?

...that don't work this way for sure, e.g. when parsing URL for its host part and pathname with final slash assumed optional to be excluded from capturing: ^(http:\/\/.+?)/?$ – Thomas Urban Mar 17 at 8:40 ...
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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?

...lues. As I iterate over the data set, I need to detect such missing values and handle them in special ways. 2 Answers ...
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What does “Mass Assignment” mean in Laravel?

...= ['*']; Let's say in your user table you have a field that is user_type and that can have values of user / admin Obviously, you don't want users to be able to update this value. In theory, if you used the above code, someone could inject into a form a new field for user_type and send 'admin' alo...
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java: (String[])List.toArray() gives ClassCastException

The following code (run in android) always gives me a ClassCastException in the 3rd line: 4 Answers ...
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Difference between array_push() and $array[] =

... as PHP has to look up the function reference, find its position in memory and execute whatever code it defines. Using $arr[] = 'some value'; does not require a function call, and implements the addition straight into the data structure. Thus, when adding a lot of data it is a lot quicker and resou...
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How to create major and minor gridlines with different linestyles in Python

I am currently using matplotlib.pyplot to create graphs and would like to have the major gridlines solid and black and the minor ones either greyed or dashed. ...
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Difference between -pthread and -lpthread while compiling

What is the difference between gcc -pthread and gcc -lpthread which is used while compiling multithreaded programs? 3 A...
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Get the Query Executed in Laravel 3/4

... Laravel 4+ In Laravel 4 and later, you have to call DB::getQueryLog() to get all ran queries. $queries = DB::getQueryLog(); $last_query = end($queries); Or you can download a profiler package. I'd recommend barryvdh/laravel-debugbar, which is pre...