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Apply a function to every row of a matrix or a data frame
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The plyr package provides a wide range of these apply kinds of functions. It also provides more functionality, including parallel processing.
– Paul Hiemstra
Nov 30 '11 at 13:29
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Simple Pivot Table to Count Unique Values
... formula to return a 1 for each unique value present.
assuming the table range for the data presented in the question is A1:B7 enter the following formula in Cell C1:
=IF(COUNTIF($B$1:$B1,B1)>1,0,COUNTIF($B$1:$B1,B1))
Copy that formula to all rows and the last row will contain:
=IF(COUNTIF(...
Uint8Array to string in Javascript
I have some UTF-8 encoded data living in a range of Uint8Array elements in Javascript. Is there an efficient way to decode these out to a regular javascript string (I believe Javascript uses 16 bit Unicode)? I dont want to add one character at the time as the string concaternation would become to CP...
reducing number of plot ticks
...umpy as np
import matplotlib.pyplot as plt
f, ax = plt.subplots()
ax.plot(range(100))
ymin, ymax = ax.get_ylim()
ax.set_yticks(np.round(np.linspace(ymin, ymax, N), 2))
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How to convert string to boolean php
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filter_var($string, FILTER_VALIDATE_BOOLEAN);
filter_var covers a whole range of values, including the truthy values "true", "1", "yes" and "on". See here for more details.
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html select option separator
...her country that replaces that character but works fine for me. There is a range of different chacters you could use for some great effects and there is no css involved.
<option value='-' disabled>――――</option>
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How can I close a buffer without closing the window?
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echohl NONE
else
let s:total_nr_buffers = len(filter(range(1, bufnr('$')), 'buflisted(v:val)'))
if s:total_nr_buffers == 1
bdelete
echo "Buffer deleted. Created new buffer."
else
bprevious
bdelete #
ec...
C++ catching all exceptions
...re is: try { std::string().at(1); // this generates an std::out_of_range } catch(...) { eptr = std::current_exception(); // capture }
– Mohammad Alaggan
Jan 1 '13 at 2:21
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Choosing Mobile Web HTML5 Framework [closed]
... PropertyCross, which demonstrates the same application implemented with a range of cross platform frameworks. It is very useful for comparing the code, development experience and end-user experience of the various frameworks.
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Passing functions with arguments to another function in Python?
...c(func):
def function_generator(x):
return reduce(func,range(1,x))
return function_generator
def add(x,y):
return x+y
def mult(x,y):
return x*y
adding=generate_add_mult_func(add)
multiplying=generate_add_mult_func(mult)
print adding...