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微软VS苹果 桌面操作系统的终极一战 - 创意 - 清泛网 - 专注C/C++及内核技术
...升级，不过12个月后是否依然免费，如果不免费那么销售版本的价格又是多少，对于这些问题，微软一直也没跟大家交个底。很显然，作为公司利润超过20%，为公司带来的收益仅此于Office的Windows，微软压根就没打算停止从其获取...
Can you control how an SVG's stroke-width is drawn?
...the inset and offset of a shape. It's not perfect (need to keep checking against latest browser versions) but it does accurately provide a shapes outer width for now.
– Steve
Sep 2 '11 at 10:02
...
App Inventor 2 字典代码块 · App Inventor 2 中文网
...路径的值
获取键路径的值 块是 获取键的值 块的更高级版本，它不是获取特定键的值，而是逐层遍历路径，逐层深入数据结构获取值。
获取键的值 块等同于获取键路径的值 块路径长度为 1。
例如，以下两个块将返回 "Tim the B...
Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
...nished my check on INNODB from 10 checks I can tell that it's 26(2query) against 9.2(1 query) SELECT SQL_CALC_FOUND_ROWS tblA.*, tblB.id AS 'b_id', tblB.city AS 'b_city', tblC.id AS 'c_id', tblC.type AS 'c_type', tblD.id AS 'd_id', tblD.extype AS 'd_extype',...
原子vector的一种实现源码(atomic-vector) - C/C++ - 清泛网 - 专注C/C++及内核技术
...接
源码依赖Facebook的folly库，稍加适配改成了独立运行的版本，代码比较简单，实现分配好空间，然后对元素进行原子交换，扩容采用链表的形式，代码可直接运行。
测试代码：
HPHP::AtomicVector<float> v_atom(2, 0.f);
void atom_vecto...
List Git aliases
...to yield lines starting with alias in case some configurations somehow contains keyword alias: git config --list | grep -E '^alias'
– MasterMind
Feb 2 '18 at 10:19
add a comme...
通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...可能会影响性能，此时没有特别好的解决办法，如果Nginx版本够的话，可以考虑激活fastcgi_cache_revalidate，如此一来，PHP-FPM一旦判断系统处于异常情况，那么可以直接返回304实现缓存续期。
…
通过FastCGI Cache实现服务降级，这是...
苹果全球开发者大会：无硬件 iOS 9等三大系统更新 - 资讯 - 清泛网 - 专注C...
...藏起来，仅收听声音。
iOS 9今天开始向开发者提供测试版本下载，公开测试版7月推出，预计9月底正式版将与iPhone 6s同时推出。iPhone 4s与iPad 2以及以上的设备都可以升级至iOS 9，苹果表示iPad Air 2完整支持3项分屏功能，而iPad Air、...
How can I get the external SD card path for Android 4.0+?
...unt")
.redirectErrorStream(true).start();
process.waitFor();
final InputStream is = process.getInputStream();
final byte[] buffer = new byte[1024];
while (is.read(buffer) != -1) {
s = s + new String(buffer);
}
is.close();
...
When to use thread pool in C#? [closed]
...onsiderations, I use thread pools for database access, physics/simulation, AI(games), and for scripted tasks ran on virtual machines that process lots of user defined tasks.
Normally a pool consists of 2 threads per processor (so likely 4 nowadays), however you can set up the amount of threads you ...