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What is the memory consumption of an object in Java?
...ecide up front which one to call.
Then of course the hardware and OS have multilayer caches, on chip-cache, SRAM cache, DRAM cache, ordinary RAM working set and backing store on disk. Your data may be duplicated at every cache level. All this complexity means you can only very roughly predi...
Design by contract using assertions or exceptions? [closed]
...ulfilled, before starting to work on its responsibilities, right? The two most prominent ways to do these checks are by assert and by exception .
...
Difference between framework and static library in xcode4, and how to call them
...built-in frameworks like Foundation and UIKit) and they should just work (most of the time).
Most frameworks contain dynamic libraries; frameworks created in Xcode using the Mac Framework template will create a dynamic library. The iPhone does not support dynamic frameworks which is why it has beco...
How does the main() method work in C?
...ignatures for main, as well as variable-length argument lists, is one of those features.
Programmers noticed that they can pass extra arguments to a function, and nothing bad happens with their given compiler.
This is the case if the calling conventions are such that:
The calling function cleans...
Reference requirements.txt for the install_requires kwarg in setuptools setup.py file
...uirements.txt instead.
Alternatively, even if not advised, it is still possible to parse the requirements.txt file (if it doesn't refer any external requirements by URL) with the following hack (tested with pip 9.0.1):
install_reqs = parse_requirements('requirements.txt', session='hack')
This ...
Why is address zero used for the null pointer?
...t as usable by the platform as an address - the C standard simply had to chose something to use to indicate a null pointer, and zero was chosen. I'm honestly not sure if other sentinel values were considered.
The only requirements for a null pointer are:
it's guaranteed to compare unequal to a ...
Why does the 260 character path length limit exist in Windows?
...
Quoting this article https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#maximum-path-length-limitation
Maximum Path Length Limitation
In the Windows API (with some exceptions discussed in the following paragraphs), the maximum length f...
How do I disable the security certificate check in Python requests
...):
# Verification happens only once per connection so we need to close
# all the opened adapters once we're done. Otherwise, the effects of
# verify=False persist beyond the end of this context manager.
opened_adapters.add(self.get_adapter(url))
settings = ol...
Is it possible to have nested templates in Go using the standard library?
... in blocks of the base templates, like Jinja/django-templates does. Is it possible using just html/template in the standard library.
...
Swift 编程语言入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Swift Programming Language》中摘录和提取而成。希望对各位的iOS&OSX开发有所帮助。今天在网上看到一篇非常好的教程，分享给大家
原文地址：http://gashero.iteye.com/blog/2075324
目录
1 简介
2 Swift入门
3 简单值
4 控制流
5 函...