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C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...因为指针指向的对象的复制不一定是必要的。
（3） 第三种就是一种折中的方式。利用一个辅助类来管理指针的复制。原来的类中有一个指针指向辅助类，辅助类的数据成员是一个计数器和一个指针（指向原来的）（此为本...
Scalar vs. primitive data type - are they the same thing?
...string is a scalar. In Java, a string is an object (or reference type). In Python, everything is (conceptually) an object/reference type, including strings (and numbers).
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Sending email with attachments from C#, attachments arrive as Part 1.2 in Thunderbird
...tachment = New System.Net.Mail.Attachment(Server.MapPath("~/App_Data/hello.pdf"));
mail.Attachments.Add(attachment);
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Django ModelForm: What is save(commit=False) used for?
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this is a python code you can't run it in code snippet
– Ayoub Benayache
Nov 29 '19 at 18:59
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Mapping two integers to one, in a unique and deterministic way
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Here is a Python implementation of Szudzik's function generalized to tuples of any length: gitlab.com/snippets/32559
– Doctor J
Dec 1 '16 at 5:46
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How can I export tables to Excel from a webpage [closed]
...extra lines of code and two small files included, you get export to Excel, PDF, CSV, to clipboard and to the printer.
This is all the code that's required:
$(document).ready( function () {
$('#example').dataTable( {
"sDom": 'T<"clear">lfrtip',
"oTableTools": {
...
Can someone give an example of cosine similarity, in a very simple, graphical way?
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This Python code is my quick and dirty attempt to implement the algorithm:
import math
from collections import Counter
def build_vector(iterable1, iterable2):
counter1 = Counter(iterable1)
counter2 = Counter(iterable2)
...
Is it possible to program iPhone in C++
...in Objective-C. pierre.chachatelier.fr/programmation/fichiers/cpp-objc-en.pdf (this is an English translation of the original French)
– olafure
Mar 31 '12 at 17:24
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Is git good with binary files?
... For example for *.jpg files it can be difference in EXIF information, for PDF files it can be difference between their text representation (pdf2text or something like that).
HTH.
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What is the size of an enum in C?
...nt C Standard (C99): http://www.open-std.org/JTC1/SC22/WG14/www/docs/n1256.pdf
6.7.2.2 Enumeration specifiers
[...]
Constraints
The expression that defines the value of an enumeration constant shall be an integer
constant expression that has a value representable as an int.
[...]
Eac...