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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区，为创新赋能！
..., /* 设备安全管理OOB标志 */
BLE_AD_TYPE_INT_RANGE = 0x12, /* 设备连接参数范围 */
BLE_AD_TYPE_SOL_SRV_UUID = 0x14,...
Using Jasmine to spy on a function without an object
...to spy on an imported function, here's what you can do.
In the test file, convert the import of the function from this:
import {foo} from '../foo_functions';
x = foo(y);
To this:
import * as FooFunctions from '../foo_functions';
x = FooFunctions.foo(y);
Then you can spy on FooFunctions.foo ...
Should functions return null or an empty object?
...g data from functions. Is it better to return a Null or an empty object? And why should one do one over the other?
31 Ans...
Replace specific characters within strings
...nd information in other answers/comments which you find useful and like to convert to an answer, you could at least provide some attribution to show where did you get the information from / make the answer a Comminuty Wiki instead of just making it as your own.
– David Arenburg...
How do I check if a list is empty?
...wraps your input into an array if it's a list, tuple, etc., and optionally converts it to your chosen dtype. So it's very quick whenever it can be, and it ensures that you just get to assume the input is a NumPy array. We usually even just use the same name, as the conversion to an array won't mak...
Python progression path - From apprentice to guru
...nd challenging. An URL shortener? Sure, I can do that. Oh, I learnt how to convert numbers from one base to another as a side effect!
This is valid whatever your skill level. You never stop learning. By actively coding in your spare time you will, with little additional effort, come to understand t...
How to remove last n characters from every element in the R vector
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@LucasSeveryn If you want to convert character time representations to dates taking into account time zones, please edit that into your question. Likely there are better answers that will get you directly to your desired results (such as strptime).
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Random string generation with upper case letters and digits
...random string of length string_length."""
random = str(uuid.uuid4()) # Convert UUID format to a Python string.
random = random.upper() # Make all characters uppercase.
random = random.replace("-","") # Remove the UUID '-'.
return random[0:string_length] # Return the random string.
p...
Concatenate two string literals
..., for the null terminator). When you use an array in most contexts, it is converted into a pointer to its initial element.
So, when you try to do "Hello" + ",world", what you're really trying to do is add two const char*s together, which isn't possible (what would it mean to add two pointers tog...
When is JavaScript's eval() not evil?
... (for spreadsheet-like functionality). Having parsed the formula I could convert it into JavaScript and run eval() on it to yield the result.
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