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What is the performance cost of having a virtual method in a C++ class?
...ced by base classes - public, protected, private - everything becomes fair game. By accident or intention subclasses could then change the behavior of functions that then cause problems when used in the base implementation.
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In Firebase, is there a way to get the number of children of a node without loading all the node dat
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This is a little late in the game as several others have already answered nicely, but I'll share how I might implement it.
This hinges on the fact that the Firebase REST API offers a shallow=true parameter.
Assume you have a post object and each one c...
Is ServiceLocator an anti-pattern?
... in our project. How many dependencies need to be configured is a guessing game if we don't have good documentation, source code, or the author on speed dial. Failing these options, we might need to use a decompiler just to figure out what the dependencies are. We may need to configure 2 entirely di...
In which order should floats be added to get the most precise result?
...you may be CPU-bound but don't care about precise numerical computations, (game programming for instance), -ffast-math is reasonable to use. Thus, I'd like to ammend my strongly worded "banned" comment.
– Chris A.
Jul 15 '11 at 16:48
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Interfaces — What's the point?
...t's not very easy to visualise a use of this)
Say you are making a simple game on screen and It will have creatures with which you interact.
A: They can make your code easier to maintain in the future by introducing a loose coupling between your front end and your back end implementation.
You c...
SHA1 vs md5 vs SHA256: which to use for a PHP login?
... different sites—otherwise a simple delay after input would do. And the "game over if they got in your server" is a moot point, because they don't need to get inside your server. The most common vulnerability hackers use has been SQL injection (see the Linkedin case), then they bruteforce the hash...
How can I get a count of the total number of digits in a number?
... @MrLore In simple applications this may be true, but in the game development world, it's an entirely different beast.
– Krythic
Jul 18 '18 at 1:00
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当ORACLE 11G 遇到 JUNIPER 防火墙 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...卡172.16.110.70/24 直连ORALCE 数据库。
然后使用端口映射软件 把172.16.100.70 的1521映射到172.16.110.102的1521端口
配置
Tnsnames.ora 文件
使用PL/SQL 连接本机的IP地址 登陆查询一切正常。
由此判断 问题不是出在跨网段等问...
What's the equivalent of use-commit-times for git?
...hes.
and I'm sure any of the above are better alternatives than playing games with file timestamps.
Linus
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Best practices for reducing Garbage Collector activity in Javascript
...vil": Understand. Don't just follow blindly. In certain scenarios, such as game and multimedia programming, performance is paramount and you're going to have a lot of "hot" code. So yeah, you're going to have to adjust your programming style.
– snarf
Sep 13 at ...