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AppInventor实现图片和文字等进行发帖和查看帖子功能 - App应用开发 - 清泛...
...图片/文字上传功能，要采用 网络微数据库 组件，图片要base64化，但是数据库单Key存储容量有限，最多60KB。实现方式复杂且数据有限制，只能demo级别应用。
3、使用 leandb 付费在线数据库。或者自己搭建 数据库服务器+图片服务...
How to write iOS app purely in C
...show on screen (eventually).
// this entire method is the objc-runtime based version of the standard View-Based application's launch code, so nothing here really should surprise you.
// one thing important to note, though is that we use `sel_getUid()` instead of @selector().
// this is b...
How to measure time in milliseconds using ANSI C?
...igh-resolution clock sources).
The second way provides a (date)time value based on the current system clock value. It may also have a high resolution, but it has one major drawback: this kind of time value can be affected by different system time adjustments, i.e. time zone change, daylight saving ...
Can I get Memcached running on a Windows (x64) 64bit environment?
...ave released a build of memcached 1.4.4 for Windows x64:
http://blog.couchbase.com/memcached-windows-64-bit-pre-release-available
http://labs.northscale.com/memcached-packages/
UPDATE: they have recently released Memcached Server - still FREE but enhanced distro with clustering, web-based admin/s...
Compiling problems: cannot find crt1.o
... to know which architecture you're building for. Are you building an AMD64 based application? If so, you'll need to tell 'ld' where the AMD64 based shared object files are, i.e. the .o files you need. If you're working on an AMD64 they should be in /usr/lib64
– jeremiah
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What's the pythonic way to use getters and setters?
...se "getters" and "setters", but to use plain attributes, like the question demonstrates, and del for deleting (but the names are changed to protect the innocent... builtins):
value = 'something'
obj.attribute = value
value = obj.attribute
del obj.attribute
If later, you want to modify the sett...
What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?
...so:
Exotic architectures the standards committees care about.
My opinion-based pragmatic view of integer types in C and C++.
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When to use NSInteger vs. int
...lve this case by using the type NSInteger which serves as an int or a long based on the compile/runtime environemnt.
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Decoding and verifying JWT token using System.IdentityModel.Tokens.Jwt
...rity tokens.
The class has a ReadToken(String) method that will take your base64 encoded JWT string and returns a SecurityToken which represents the JWT.
The SecurityTokenHandler also has a ValidateToken(SecurityToken) method which takes your SecurityToken and creates a ReadOnlyCollection<Claim...
How to hash some string with sha256 in Java?
...binary data, and if you want to represent that in a string, you should use base64 or hex... don't try to use the String(byte[], String) constructor.
e.g.
MessageDigest digest = MessageDigest.getInstance("SHA-256");
byte[] hash = digest.digest(text.getBytes(StandardCharsets.UTF_8));
...