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Generate pdf from HTML in div using Javascript
... page
if (i > 0) {
pdf.addPage(612, 791); //8.5" x 11" in pts (in*72)
}
//! now we declare that we're working on that page
pdf.setPage(i+1);
//! now we add content to that page!
pdf.addImage(canvasDataURL, 'PN...
ZMQ: 基本原理 - 开源 & Github - 清泛网移动版 - 专注C/C++及内核技术
ZMQ: 基本原理0MQ-The-Theoretical-Foundation介绍与其他的基于常规理论基础的（集中）通信系统不同，几乎没有分布式通信系统的什么资料，ØMQ(ZeroMQ)是感兴趣的读者少数能请举出...
介绍
与其他的基于常规理论基础的...
Why does Math.round(0.49999999999999994) return 1?
...99999999998 rounded is 10
9.5 rounded is 10
9.499999999999998 rounded is 9
8.5 rounded is 9
8.499999999999998 rounded is 8
7.5 rounded is 8
7.499999999999999 rounded is 7
6.5 rounded is 7
6.499999999999999 rounded is 6
5.5 rounded is 6
5.499999999999999 rounded is 5
4.5 rounded is 5
4.49999999999999...
Equals(=) vs. LIKE
...m the vagaries of the collation.
How Does LIKE Work?
The SQL Standard § 8.5 describes how LIKE compares strings:
The <predicate>
M LIKE P
is true if there exists a partitioning of M into substrings
such that:
i) A substring of M is a sequence of 0 or more contiguous
&...
libevent对比libev的基准测试 - C/C++ - 清泛网 - 专注C/C++及内核技术
...接收数据。
使用的基准程序是bench.c，取自 libevent 发行版，经过修改以收集每次测试迭代的总时间，可选择启用事件观察器的超时以及可选择使用本机 libev API 并以不同方式输出时间。
对于 libevent，使用版本 1.4.3，而对于 libev...
重构理论及实践——用工厂模式重构c++后台代码 - C/C++ - 清泛网 - 专注C/C...
...构的，架构的问题咱们在这儿就不展开聊了：）
代码V1版
遵循tsf4j的tapp写法，ServerCenterApp类是后台程序的主逻辑类，其中process_pkg是消息处理的主逻辑函数。会对不同的消息调用不同的消息processor函数。而每个消息processor函...
Google Maps API v3: How do I dynamically change the marker icon?
...p,
icon: {
path: google.maps.SymbolPath.CIRCLE,
scale: 8.5,
fillColor: "#F00",
fillOpacity: 0.4,
strokeWeight: 0.4
},
});
and then, if you want to change the marker dynamically (like on mouseover), you can, for example:
oMarker.setIcon({
...
Why can't variables be declared in a switch statement?
...ss the variable has POD type (3.9) and is declared without an initializer (8.5)."
– Richard Corden
Feb 22 '10 at 18:21
1
...
Using {} in a case statement. Why?
...rray of one of the preceding types and is declared without an initializer (8.5).
and provides this example:
void f() {
// ...
goto lx; // ill-formed: jump into scope of a
ly:
X a = 1;
// ...
lx:
goto ly; // OK, jump implies destructor
// call for a followed by construction
...