btk | 虚拟蓝牙键盘(BlueTooth Keyboard)
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虚拟蓝牙键盘(BlueTooth Keyboard)
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QUESTION
I have VBA code that navigates through webpages by clicking on elementId
.
When the elementId
is found it provides desired result.
My problem is, there is no error prompted when the elementId
is not found. The code continues till the end.
For example, the code:
...ANSWER
Answered 2020-Jul-11 at 20:06As far as I understood, you would like to check if elementId
representing the button btk
in the webpage really exists before you call the click event.
One way of doing this is creating an object (I will call it buttonElement) and try to set it to the button with id btk
(using getElementById("btk")
, if it doesn't exist in the webpage, the object buttonElement
will be Nothing
, but if it exists, the object will get a reference to this button
QUESTION
I'm a new learner in data science. I havent find out why I got an attribute error. I used python 3.8.3 in Visual Studio Code. I installed Pandas in terminal (pip install Pandas). I dont know what the problem is. Any help will be appreciated.
...ANSWER
Answered 2020-Jul-06 at 05:43It's a little weird, the "string" module is a part of the standard library. Could you try this code?
QUESTION
I am having fun with System.Numerics.Vector on .NET 4.7.2. As a first attempt, I coded a basic function to identify if there is a whitespace in an ASCII string. I implemented three versions of the function:
- LINQ,
- classic for loop and
- vectorized version (SIMD).
I am surprised to see that the vectorized version is significantly slower than the classic for loop.
...ANSWER
Answered 2020-Jul-02 at 17:52The expensive part with Vector
is getting hold of the initialized Vector
in the first place - so the main trick that recent code uses is to cheat and use MemoryMarshal.Cast<,>()
to access existing memory by changing a Span
into a Span>
; in the case of string
, you'd probably have to use ushort
instead of char
to convince it that it knows what it is doing (char
and ushort
are the same thing in memory terms), so:
QUESTION
Consider this code:
...ANSWER
Answered 2020-May-30 at 22:28I can say for certain GCC is wrong to inherit that constructor. Primarily because
[namespace.udecl]
3 In a using-declaration used as a member-declaration, each using-declarator's nested-name-specifier shall name a base class of the class being defined. If a using-declarator names a constructor, its nested-name-specifier shall name a direct base class of the class being defined.
But the kicker is that B::A
doesn't even name a constructor at all.
[class.qual]
2 In a lookup in which function names are not ignored and the nested-name-specifier nominates a class C:
- if the name specified after the nested-name-specifier, when looked up in C, is the injected-class-name of C (Clause [class]), or
- in a using-declarator of a using-declaration that is a member-declaration, if the name specified after the nested-name-specifier is the same as the identifier or the simple-template-id's template-name in the last component of the nested-name-specifier,
the name is instead considered to name the constructor of class C. [ Note: For example, the constructor is not an acceptable lookup result in an elaborated-type-specifier so the constructor would not be used in place of the injected-class-name. — end note ] Such a constructor name shall be used only in the declarator-id of a declaration that names a constructor or in a using-declaration. [ Example:
QUESTION
Good day, I am having issues plotting the bar graph x values from 16000 to 17000, and I'm not sure how to fix it. Thank you in advance.
...ANSWER
Answered 2020-Apr-13 at 16:26Edit your line for:
QUESTION
I have uploaded two csv
s and I'm using a reactive()
in shinyr
to manipulate the csv
data. However am getting this error
Error in $: object of type 'closure' is not subsettable
Am quite new to R, how can I get past that error?! Thanks
...ANSWER
Answered 2019-Apr-17 at 13:11You reference the mk
reactive value without parentheses, which are required because technically the object is a reactive function. This should solve your issue:
QUESTION
I am trying to write a log scrapper that will add links to text,
So for example the log contains-
...ANSWER
Answered 2018-May-01 at 16:48You can use a single sed
command like this:
QUESTION
I'm new to lxml parsing, and can't manage a simply parsing issue. The is a line in my xml that looks like:
...ANSWER
Answered 2018-Apr-19 at 13:50Try something along these lines:
QUESTION
Core-Animation treats angles as described in this image: (image from http://btk.tillnagel.com/tutorials/rotation-translation-matrix.html)
EDIT: Adding an animated gif to explain better what I'm needing:
I need to animate a slice to grow wider, starting at 300:315 degrees, and ending 300:060.
To create each slice I'm using this function:
...ANSWER
Answered 2017-Jul-06 at 15:47So at last I have found a solution. It took me time to understand that there is indeed no way to animate the fill of the shape, but we can trick CA engine by creating a filled circle by making the stroke (i.e. the border of the arc) extremely wide, so that it fills the whole circle!
QUESTION
Sorry for a long question, not sure how to explain my issue other than this..
I have a query
...ANSWER
Answered 2017-Jun-13 at 14:29I assume you feed search:values
with the same $q
as search:search
, but you are passing in $valueOptions
which doesn't have the constraint definition for context
.
Add the values
definition to $options
, and use that for search:values
.
HTH!
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You can use btk like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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