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Getting a list item by index
...ar secondElement = myList[1];
Starting with C# 8.0 you can use Index and Range classes for accessing elements. They provides accessing from the end of sequence or just access a specific part of sequence:
var lastElement = myList[^1]; // Using Index
var fiveElements = myList[2..7]; // Using Range,...
C library function to perform sort
...son/sort has just two header files you can include to get access to a wide range of incredibly fast sorting routings, like so:
#define SORT_NAME int64
#define SORT_TYPE int64_t
#define SORT_CMP(x, y) ((x) - (y))
#include "sort.h"
/* You now have access to int64_quick_sort, int64_tim_sort, etc., e....
python dataframe pandas drop column using int
...mn on i index like this:
df.drop(df.columns[i], axis=1)
It could work strange, if you have duplicate names in columns, so to do this you can rename column you want to delete column by new name. Or you can reassign DataFrame like this:
df = df.iloc[:, [j for j, c in enumerate(df.columns) if j != ...
Why is there no std::stou?
...n stoul and a hypothetical stou would be a check that the result is in the range of unsigned:
unsigned stou(std::string const & str, size_t * idx = 0, int base = 10) {
unsigned long result = std::stoul(str, idx, base);
if (result > std::numeric_limits<unsigned>::max()) {
...
How are feature_importances in RandomForestClassifier determined?
... Hi @Peter when I use your code I get this error: NameError: name 'xrange' is not defined.
– Aizzaac
Jan 6 '17 at 23:50
...
Array slices in C#
...e 3.0
Array slicing will be supported, along with the new types Index and Range being added.
Range Struct docs
Index Struct docs
Index i1 = 3; // number 3 from beginning
Index i2 = ^4; // number 4 from end
int[] a = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
Console.WriteLine($"{a[i1]}, {a[i2]}"); // "3...
When to use NSInteger vs. int
...better suited to even a long. Maybe you know that it wont exceed a certain range, and therefore think it will be more memory-efficient to simply use int.
– Jacob Relkin
Dec 14 '10 at 23:27
...
How do streaming resources fit within the RESTful paradigm?
...would be for the client to access the resource in chunks by utilizing HTTP Range headers. For fetching the second 256KB chunk of a file that is 1MB large, the client request would then look like this:
GET /media/1.3gp
...
Range: bytes=131072-262143
...
A server which supports ranges would then re...
PHP: Return all dates between two dates in an array [duplicate]
...
function createDateRangeArray($strDateFrom,$strDateTo)
{
// takes two dates formatted as YYYY-MM-DD and creates an
// inclusive array of the dates between the from and to dates.
// could test validity of dates here but I'm already ...
Download the Android SDK components for offline install
...in notepad. Find your ip address from ipconfig. In the file, go the subnet range in which your ip falls.
Eg: isInNet(resolved_ip, "198.175.111.0", "255.255.255.0") will be true for 198.175.111.53
take the return value: after the word PROXY and use this for configuring SDK Manager.
Now the SDK will...