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Pandas selecting by label sometimes return Series, sometimes returns DataFrame
...or a row as for a column:
import pandas as pd
df = pd.DataFrame(data=[11,12,13], index=[2, 3, 3])
print '-------- df -------------'
print df
print '\n------- df.loc[2] --------'
print df.loc[2]
print 'type(df.loc[1]) : ',type(df.loc[2])
print '\n--------- df[0] ----------'
print df[0]
print 'ty...
Are loops really faster in reverse?
...a bit more scrutiny and it turns out that in C/C++,
even for 5e9 = (50,000x100,000) operations, there is no difference between going up and down if the testing is done against a constant like @alestanis says. (JsPerf results are sometimes inconsistent but by and large say the same: you can't make a ...
Does Flask support regular expressions in its URL routing?
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Armin RonacherArmin Ronacher
29.6k1212 gold badges6262 silver badges6969 bronze badges
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Hidden features of HTML
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100
votes
My favourite bit is the base tag, which is a life saver if you want to use ...
How do exceptions work (behind the scenes) in c++
... _Z3logj
addl $20, %esp
popl %ebx
popl %ebp
ret
.L12:
subl $1, %edx
movl %eax, %ebx
je .L16
.L14:
movl %ebx, (%esp)
call _Unwind_Resume
.LEHE2:
.L16:
.L6:
movl %eax, (%esp)
call __cxa_begin_catch
movl $3, (%esp)
.LEHB3:
...
How much is too much with C++11 auto keyword?
... // unclear. don't know which type `foo` has
const size_t max_size = 100;
for ( auto x = max_size; x > 0; --x ) // unclear. could lead to the errors
// since max_size is unsigned
std::vector<some_class> v;
for ( auto it = v.begin(); it != v.end()...
Is it possible to implement a Python for range loop without an iterator variable?
... same anyway.
– Lambda Fairy
Jan 2 '12 at 3:37
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show 7 mo...
Unmangling the result of std::type_info::name
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edited May 23 '17 at 12:26
Community♦
111 silver badge
answered Dec 27 '10 at 20:10
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How do you handle multiple submit buttons in ASP.NET MVC Framework?
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100
Eilon suggests you can do it like this:
If you have more than one button you
can disting...
Why is using 'eval' a bad practice?
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