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lua和c/c++互相调用实例分析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...建lua运行上下文
lua_State* luaL_newstate(void) ;
//加载lua脚本文件
int luaL_loadfile(lua_State *L, const char *filename);
lua和c/c++的数据交互通过"栈"进行 ,操作数据时，首先将数据拷贝到"栈"上，然后获取数据，栈中的每个数据通过索引值进...
How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
...ist
Initialize a new 10.1 database:
initdb /usr/local/var/postgres10.1 -E utf8
run pg_upgrade (note: change bin version if you're upgrading from something other than below):
pg_upgrade -v \
-d /usr/local/var/postgres \
-D /usr/local/var/postgres10.1 \
-b /usr/local/Cellar/postgresql/9....
demystify Flask app.secret_key
...et string of bytes
>>> SECRET_KEY = 'my super secret key'.encode('utf8')
( 2 ) create a cookie
>>> cookie = make_cookie(
... name='_profile',
... content='uid=382|membership=regular',
... ...
... expires='July 1 2030...'
... )
>>> print(cookie)
name: _...
What is Java String interning?
...ve on the constant pool:
#2 = String #32 // abc
[...]
#32 = Utf8 abc
and main:
0: ldc #2 // String abc
2: astore_1
3: ldc #2 // String abc
5: astore_2
6: new #3 // class java/lang/String
9: dup
10: ldc ...
What is the difference between encode/decode?
...e @J.F.Sebastian in python3 I guess you would do: print u'\\u0203'.encode('utf8').decode('unicode-escape')
– AJP
Mar 27 '14 at 11:54
...
译文：理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...强引用可能带来的问题就是缓存,尤其是像图片这样的大文件的缓存。假设你有一个程序需要处理用户提供的图片，通常的做法就是做图片数据缓存，因为从磁盘加载图片代价很大，并且同时我们也想避免在内存中同时存在两份...
Accessing an SQLite Database in Swift
...t:OpaquePointer? = nil
let strExec=str.cString(using: String.Encoding.utf8)
if (sqlite3_open(DBpath, &db)==SQLITE_OK)
{
if (sqlite3_prepare_v2(db, strExec! , -1, &stmt, nil) == SQLITE_OK)
{
if (sqlite3_step(stmt) == SQLITE_DONE)
{
...
How to secure an ASP.NET Web API [closed]
...omputeHash(string hashedPassword, string message)
{
var key = Encoding.UTF8.GetBytes(hashedPassword.ToUpper());
string hashString;
using (var hmac = new HMACSHA256(key))
{
var hash = hmac.ComputeHash(Encoding.UTF8.GetBytes(message));
hashString = Convert.ToBase64Stri...
CSS content property: is it possible to insert HTML instead of Text?
...svg file, or create it with a dataURI version (data:image/svg+xml; charset=utf8, + encodeURIComponent(yourSvgMarkup))
But note that it is mostly a hack and that there are a lot of limitations :
You can not load any external resources from this markup (no CSS, no images, no media etc.).
You can n...
国际 C 语言混乱代码大赛结果 - 创意 - 清泛网 - 专注C/C++及内核技术
...了一个无整数的 MD5 程序，Don Yang 写了一个有海星图案的文本编码器。侯应该是第 4 回获奖了，Don Yang 应是第 7 回。
虽然主办方目前还没有公布这次比赛的源码，但可以围观他俩之前的作品。
Best self documenting program (2011/hou/hou...