aprx | Proxied wrapper object for Promise | Reactive Programming library
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kandi X-RAY | aprx Summary
Proxied wrapper object for Promise.
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QUESTION
The behavior is random. I made pcaps with wireshark and tcpdump. Both show the packets length correctly.
When I do sock.recv, I randomly receive data from 2 consecutive packets. The behaviour is rare. From aprx 100 packets, 1-2 recv contains data from 2 consecutive packets.
The packets are sent very fast. Some are received bellow 1ms. However this is not a good indicator because other packets received in similar time diff are read correctly.
The socket is AF_INET, SOCK_STREAM, non blocking and it is implemented using selectors.
The socket is a client
...ANSWER
Answered 2022-Mar-10 at 21:34As @jasonharper says, TCP is a protocol that provides you with a stream of bytes. It doesn't provide you with packets.
If you have a protocol that runs over TCP, and that has a notion of individual packets, there is no guarantee that a single chunk of bytes delivered on a TCP socket will begin at the beginning of a higher-level packet or will end at the end of the same higher-level packet. A packet may be broken up between two chunks, and a chunk may include bits of more than one packet. The only guarantee you get from TCP is that the data you get is received in the order in which it's transmitted.
As noted in the comment, protocols that run atop TCP generally either use some form of terminator to mark the end of a packet or put a byte count at the beginning of a packet to indicate how many bytes are in the packet.
QUESTION
I have an api service which returns data with an offset of 1 hour forward aprx. It's not timezone it's the way they aggreagate data for previous date and it happens during first hour of following date after midnight. So if I date_trunc by day and group it this way then I lose some portion of data which comes after midnight. The task is to group this data for current date with offset in mind skipping starting hour from current date and grab data from following date as if it were this current date.
How would you approach this case?
Thanks.
...ANSWER
Answered 2021-May-18 at 12:06Just subtract one hour:
QUESTION
I have a question about how to move values around in the x86 Assembly eax register. I know that the 32-bit register breaks down into smaller component registers with the lower 16-bits being ax and that 16- bits breaks down even further into the 8-bit registers ah and al.
I'm currently writing a program for an x86 Assembly Language assignment that wants me to move four 8-bit hex values around in the register using only the mov, add, and sub commands. The program starts by having you shift the values of the variables around by adding and subtracting them, and that's no problem.
The second part (phase2) is to put each of the values into each of the eax 8-bit positions. But, I know you can only access the lower two 8-bit positions ("ah" and "al".) I need to somehow move ah and al together into that leading 16-bits of eax, pushing the values added to ah and al left two-byte positions? (question mark, because I do not know.) I am fairly certain that I can then just add the correct values back to ah and al to finish the solution.
I believe the way to do this is to add 'some hex value' to ah and have that overflow left, but I can't seem to wrap my head around the logic of it. "Logically," I want to say this seems like the best course of action, but I'm not sure how to implement it. And, since I can't wrap my head around it, I can't find the hidden algorithm I'm supposed to find. Phase2 is only supposed to be aprx 21 lines so I know it is not a massive column of add instructions.
Any direction on how to think about this would be highly appreciated. Thanks to whomever.
...ANSWER
Answered 2021-Mar-15 at 01:50If you can't use shl eax, 16
like a normal person, your other options include the following:
add eax,eax
repeated 16 times (yuck, slow), in a loop partially unrolled, or fully unrolled.- store / reload at an offset: also slow, but only for latency (store-forwarding stall). Throughput can be ok, while latency is pretty close to the same 16 cycles as the 16x
add
way on a typical modern x86.
QUESTION
I have a Json value stored in SQL server table as ntext:
JSON (column: json_val):
...ANSWER
Answered 2020-Dec-22 at 10:07As Panagiotis said in the comments:
As for the JSON path, this JSON string is an array with a single element
Instead, therefore, you can use OPENJSON
which would inspect each array:
QUESTION
I am very new to Excel, VBA, Macro. I have created a macro that adds new column Named "Response Time" and calculates the total time from the values in two-column. My macro was working fine because I gave a simple formula, for example, D2(column name)-C2(column name) = Total time in HH:MM format (Response Time) new column. But I noticed when the date is the same i.e. time frame within 24 hrs the macro output is correct. However, I want the macro to find the date difference and calculate the total hours in newly added column "Response Time" for example Column C (MM/DD/YYYY hh:mm) 09/02/2020 23:00 column d (MM/DD/YYYY hh:mm) 09/03/2020 22:00 = Output in a newly added column named (Response Time) should be 25:00 hrs as the difference is 1 day 1 hrs so total 25 hrs. I will paste excel screenshot and codes below
Excel Screen wrong output
In the above screenshot if you see the highlighted one in yellow column C and D has 2 different dates where the time span is more than 24 hrs and out is in column f is incorrect. Similarly, if you see the above columns where the date is the same and time span is within 24 hrs so output diff total hrs is correct.
So all I want to give a formula in coding that compare these 2 columns date time and gives the total hrs in HH:MM format. So in the above highlighted in yellow total hrs should show 162 hrs aprx in newly added column name called response time.
My codes: -
...ANSWER
Answered 2020-Dec-17 at 15:15QUESTION
I have a string called listnumber
...ANSWER
Answered 2020-Jun-05 at 15:29Instead of joining the string back together, just leave it apart:
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