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优惠券批量生成及导入的思路 - 闲聊区 - 清泛IT论坛，有思想、有深度
... mt_rand(0, PHP_INT_MAX);
$m = base_convert($m, 10, 36); // 主随机
$n = base_convert($n, 10, 36); // 辅随机
$r = substr($m . $n, 0, 16);
} whi...
自定义下载器扩展：个性化下载进度展示 - App Inventor 2 拓展 - 清泛IT社...
...et the current download ID.
Cancel all ongoing downloads.
This block converts the bytes into KB and MB automatically, You can use own calculation for converting bytes into big units.
Get the downloaded size for a specific download ID.
These blocks pause/resume/cancel the download for giv...
How to encode URL parameters?
...tput: %40%23%24%25%5E%26*. So, wait, what happened to *? Why wasn't this converted? TLDR: You actually want fixedEncodeURIComponent() and fixedEncodeURI(). Long-story...
You should not be using encodeURIComponent() or encodeURI(). You should use fixedEncodeURIComponent() and fixedEncodeURI(), a...
Hashset vs Treeset
...of elements
It is generally faster to add elements to the HashSet and then convert the collection to a TreeSet for a duplicate-free sorted traversal.
None of these implementations are synchronized. That is if multiple threads access a set concurrently, and at least one of the threads modifies the se...
Python int to binary string?
Are there any canned Python methods to convert an Integer (or Long) into a binary string in Python?
35 Answers
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How to access property of anonymous type in C#?
...ackground
As a starting point, I found a good answer here. The idea is to convert the anonymous data type into a dictionary by using reflection. The dictionary makes it easy to access the properties, since their names are stored as keys (you can access them like myDict["myProperty"]).
Inspired by ...
How can I verify if one list is a subset of another?
...lications. Basically the fact that one is a dict means you may not need to convert the static part to a set (you could check all(itertools.imap(dict.has_key, mylist)) with O(n) performance).
– Yann Vernier
May 18 '13 at 14:28
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Parsing JSON using Json.net
...
}
Edit:
Json.NET works using the same JSON and classes.
Foo foo = JsonConvert.DeserializeObject<Foo>(json);
Link: Serializing and Deserializing JSON with Json.NET
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What is [Serializable] and when should I use it?
...have to think about how the object is represented because you will need to convert to a different format. This conversion is called SERIALIZATION.
Uses for Serialization
Serialization allows the developer to save the state of an object and recreate it as needed, providing storage of objects as well ...
What do numbers using 0x notation mean?
...omplement- a clever way that does not require '-' sign. So, it's basically converting from binary to hex, negative or positive.
– Shuvo Sarker
Mar 6 at 21:05
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