comm | A hypothetical , distributed , encrypted , instant | Messaging library
kandi X-RAY | comm Summary
kandi X-RAY | comm Summary
A hypothetical, distributed, encrypted, instant messaging protocol.
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QUESTION
I have a microcontroller which I communicate with my windows pc, through FT232RL. On the computer side, I am making a C-library to send and receive data, using windows API.
I have managed to:
- Receive data (or multiple receives),
- Transmit data (or multiple transmits),
- First transmit (or multiple transmits) and then receive data (or multiple receives)
But I have not managed to:
- Transmit Data and then receive.
If I receive anything, and then try to transmit, I get error. So, I guess when I receive data, there is a change in configuration of the HANDLE hComm
, which I cannot find.
So the question is, what changes to my HANDLE hComm
configuration when I receive data, which does not allow me to transmit after that?
Here is my code/functions and the main() that give me the error. If I run this, I get this "error 6" -screenshot of the error down below-:
...ANSWER
Answered 2021-Jun-14 at 01:17According to MSDN:Sample, Maybe you need to set a pin's signal state to indicate the data has been sent/received in your microcontroller program. More details reside in your serial communication transmission of data standard. And you should write code according to the result of WaitCommEvent(hCom, &dwEvtMask, &o);
like the linked sample.
QUESTION
I have a table that contains XML of HUGECLOB data type, I need to extract CLOB data as XML and get some specific XML tag value to insert it into another table.
I used dbms_lob to get XML and the following is my code to insert XML into another table.
...ANSWER
Answered 2021-Jun-12 at 08:41The VARCHAR2
data type needs a size and you are missing the columns MGR
, SAL
, COMM
and DEPT
so SELECT *
will only get 4 columns and not the 8 you have named in the INSERT
.
QUESTION
Display department wise total salary for each job designation like junior,saleswomen,supervisor. *without using spark.sql()
INPUT
...ANSWER
Answered 2021-Jun-11 at 18:44Your groupBy/agg
is on the right track except that filter("job")
makes no sense in agg()
. Use pivot
on column job
instead, as shown below:
QUESTION
I am trying to get setup using GTK3+ and Glade. Unfortunately the most basic setup I can find online is sefaulting. In Glade I just created a basic window with the ID window_main
. I'm not sure how this isn't working.
bytebowl.c
...ANSWER
Answered 2021-Jun-10 at 05:05You need to call gtk_init()
before any other functions from Gtk.
Additionally, gtk_builder_get_object()
does not pass ownership of the widget to the caller, so calling g_object_unref()
on the builder where you do is probably not a good idea.
QUESTION
I am looking for an easy way to find whether the value in a column lies within the range of values in other columns.
My input looks like this:
...ANSWER
Answered 2021-Jun-09 at 13:03You might try something like this with rowwise
and c_across
:
QUESTION
I have a dataframe that contains 14 columns and x number of rows of data. An example slice of the dataframe is linked below:
Current Example of my dataframe
I want to be able to merge all four rows of data into a single row based on the "work order" column. See linked image below. I am currently using pandas to take data from four different data sources and create a dataframe that has all the relevant data I want based on each work order number. I have tried various methods including groupby, merge, join, and others without any good results.
How I want my dataframe to look in the end
I essentially want to groupby the work order value, merge all the site names into a single value, then have all data essentially condense to a single row. If there is identical data in a column then I just want it to merge together. If there are values in a column that are different (such as in "Operator Ack Timestamp") then I don't mind the data being a continuous string of data (ex. one date after the next within the same cell).
example dataframe data:
...ANSWER
Answered 2021-Jun-08 at 20:154 steps to get expected output:
- Replace empty values by
pd.NA
, - Group your data by
Work Order
column because it seems to be the index key, - For each group, fill
NA
value by last valid observation and keep the last record, - Reset index to have the same format as input.
I choose to group by "Work Order" because it seems to be the index key of your dataframe.
The index of your dataframe is "Work Order":
QUESTION
I'm trying to open a FITS file with healpix using a C code:
...ANSWER
Answered 2021-Jun-04 at 17:46Per the documentation of read_healpix_map()
:
ordering
and coordsys
are output arguments - they are pointers to space into which the function will write results. You have passed pointers to string constants in memory that will normally be marked read-only and may not be sufficiently large to receive the result in any case.
nside
is also an output argument, initialising it to 512 serves no purpose. You do not need p_nside
; you can simply pass &nside
It is not the most clear of interfaces; specifically it is not clear whether coordsys
is a string or a single char
. The documentation uses single quotes so you might assume char
but then it does that for ordering
too and that is clearly a string. It is safest to assume coordsys
is a string - it will do no harm.
QUESTION
I configured a remote docker instance (on Server A) which enables tcp://server_a:2376
to serve the API.
And I have a Jenkins server deployed on Server B, using (Docker jenkinsci/blueocean
image).
Now I can access the Docker instance on Server A through TCP port:
...ANSWER
Answered 2021-May-29 at 02:00Okay, so this might sound silly, but try changing python --version to to python3 --version.
Also, make sure that your Python container has all appropriate paths in sh and bash.
At last, make sure that the syntax for docker.image.inside() black for Python command execution is correct.
QUESTION
I store the result of my Flask server in this.state.jsondata
and it's a JSON like this {label{},text{}}
ANSWER
Answered 2021-Jun-02 at 18:28QUESTION
My scenario is the following one: the client upload a CSV to the Flask server, Flask convert the CSV to a Pandas dataframe in order to perform task then it send it back as a JSON object, finally the client display the result in a
My problem is : Objects are not valid as a React child (found: object with keys {label, text}). If you meant to render a collection of children, use an array instead.
So after some research I understand that the problem comes from the way I transfer the data from Flask to the client.
Here is my Flask code:
...ANSWER
Answered 2021-Jun-02 at 09:22It depends on how you want to display it. If you just want to print out the whole object, you can simply wrap it in JSON.stringify
:
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Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
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