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Collection that allows only unique items in .NET?
...at contains no duplicate elements, and whose elements are in no particular order.
Note that the HashSet<T>.Add(T item) method returns a bool -- true if the item was added to the collection; false if the item was already present.
...
开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...底层传输协议 QUIC 的支持，以解决复杂网络环境下的通信问题，提升整体吞吐量和移动连接的稳定性。此外，EMQX 也扩展支持 MQTT-SN、CoAP、LwM2M、STOMP 以及其他协议扩展。安全性安全性对于物联网设备连接以及设备之间、设备与...
Prefer composition over inheritance?
...ifference, it's easier to explain.
Procedural Code
An example of this is PHP without the use of classes (particularly before PHP5). All logic is encoded in a set of functions. You may include other files containing helper functions and so on and conduct your business logic by passing data around i...
Convert objective-c typedef to its string equivalent
... array.
Make sure the indexes are the appropriate enums, and in the right order (otherwise exception).
note: names is a property synthesized as *_names*;
code was not checked for compilation, but I used the same technique in my app.
typedef enum {
JSON,
XML,
Atom,
RSS
} FormatType;
+ (N...
VIM + JSLint?
...instructions updated for Nov. 2012. Assumes you have Homebrew installed in order to get Node.js, and that you've already installed Syntastic for Vim (I use https://github.com/carlhuda/janus which provides this automatically):
$ brew install node.js
$ npm install -g jshint
Then add '/usr/local/sha...
Combining INSERT INTO and WITH/CTE
... CTE will return exactly four fields and that those fields are matching in order and type with those specified in the INSERT statement.
If that is not the case, just replace the "SELECT *" with a specific select of the fields that you require.
As for your question on using a function, I would say "...
Should I impose a maximum length on passwords?
... treat only the first 256/1024/2k/4k/(whatever) bytes as "significant", in order to avoid crunching on mammoth passwords.]
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How to dump a dict to a json file?
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Good thing to remember here is that unless you use an OrderedDict (python >2.7) there is no guarantee that keys are ordered in any particular manner
– ford prefect
Aug 1 '17 at 18:08
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What does character set and collation mean exactly?
...t if the collation is set to, for example, French, you'll have them in the order you thought they would be, which is all of e é è ê are equal, and then f.
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Adding a directory to $LOAD_PATH (Ruby)
...entially searches the Ruby paths first.
So, I needed to change the search order so that Ruby found the class in my common library before it searched the built-in libraries.
This code did it in the environment.rb file:
Rails::Initializer.run do |config|
* * * * *
path = []
path.concat($LOAD_PATH...