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Frequency table for a single variable
...s such
[my_series[c].value_counts() for c in list(my_series.select_dtypes(include=['O']).columns)]
Breakdown:
my_series.select_dtypes(include=['O'])
Selects just the categorical data
list(my_series.select_dtypes(include=['O']).columns)
Turns the columns from above into...
Getting Chrome to accept self-signed localhost certificate
...herment
subjectAltName = @alt_names
[alt_names]
DNS.1 = $NAME # Be sure to include the domain name here because Common Name is not so commonly honoured by itself
DNS.2 = bar.$NAME # Optionally, add additional domains (I've added a subdomain here)
IP.1 = 192.168.0.13 # Optionally, add an IP address (...
conflicting types for \'dev_t\'的原因 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...es for dev_t ，这貌似是一个Linux历史遗留问题，需要调整include头文件的顺序。在Linux下编译程序有时会遇到这种问题，这貌似是一个Linux历史遗留问题:
/usr/include/sys/types.h:62: error: conflicting types for ‘dev_t’
/usr/include/linux/...
Equivalent C++ to Python generator pattern
...:endl;
P.S. Here's a generator implemented with the Mordor coroutines:
#include <iostream>
using std::cout; using std::endl;
#include <mordor/coroutine.h>
using Mordor::Coroutine; using Mordor::Fiber;
void testMordor() {
Coroutine<int> coro ([](Coroutine<int>& self)...
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
...
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Operation on every pair of element in a list
... how they differ:
product() generates every possible pairing of elements, including all duplicates:
1,1 1,2 1,3 1,4
2,1 2,2 2,3 2,4
3,1 3,2 3,3 3,4
4,1 4,2 4,3 4,4
permutations() generates all unique orderings of each unique pair of elements, eliminating the x,x duplicates:
. 1,2...
Is it possible to cache POST methods in HTTP?
...ers.
Responses to this method are not cacheable, unless the response
includes appropriate Cache-Control or Expires header fields. However,
the 303 (See Other) response can be used to direct the user agent to
retrieve a cacheable resource.
Note that the same RFC states explicitly in sect...
A std::map that keep track of the order of insertion?
...et) which is MIT license. You can find it here: ordered-map
Map example
#include <iostream>
#include <string>
#include <cstdlib>
#include "ordered_map.h"
int main() {
tsl::ordered_map<char, int> map = {{'d', 1}, {'a', 2}, {'g', 3}};
map.insert({'b', 4});
map['h'] = 5;
map[...
Comment the interface, implementation or both?
...a specific: when documenting the implementation, use {@inheritDoc} tag to "include" javadocs from the interface.
For more information:
Official javadoc documentation
Some unofficial advice.
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