itoa | Fast function for printing integer primitives | Binary Executable Format library
kandi X-RAY | itoa Summary
kandi X-RAY | itoa Summary
[] [] [] [] This crate provides a fast conversion of integer primitives to decimal strings. The implementation comes straight from [libcore] but avoids the performance penalty of going through [core::fmt::Formatter]. See also [ryu] for printing floating point primitives. [libcore]: [core::fmt::Formatter]: [ryu]:
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QUESTION
Following is the code:
...ANSWER
Answered 2021-Jun-09 at 11:09Looking at your code, two things can cause a deadlock:
errg.Wait()
blocks the execution of the main goroutine until all initialized goroutines are finished. However, each goroutine is blocked when trying to write tomapChan
, because you never get to read from it (because it is below theerrg.Wait()
).- You never read from
sliceChan
, so that is a potential deadlock right there.
Here is the link to the modified Playground code, but most of the changes are in the main
function.
QUESTION
I am trying to update both value1 and value2 item attributes in DynamoDb Table, but the UpdateExpression
sets only one argument (value1).
Trying to include both value1 and value2 (aws.String("set value1= :r, set value2= :c")
) results in:
ANSWER
Answered 2021-Jun-06 at 16:20Use this syntax:
QUESTION
Hello I need to output 1 after converting this value "0x00000800" Even if I convert this value("0x00000800") to 2048, it is enough.
...ANSWER
Answered 2021-Jun-01 at 21:34Itoa isn't what you are looking for
QUESTION
I'm trying to build a simple port scanner for a beginner golang project
and most of the code works as intended, but I'm having a problem with
ipv4_gen()
function to return all ips that are generated line by line
and pass them to another function to scan them currently ipv4_gen()
Returns the first line only is there a way I can iterate over the ip
variable to returns all the ips line by line?
ANSWER
Answered 2021-Jun-01 at 12:06To return multiple results from a function (especially when generating potentially thousands of results) it's idiomatic in Go to use a channel.
QUESTION
I am using the paho.mqtt.golang library to connect to a broker and publish message.
It's working fine except that I don't have errors when the publish failed.
The test I'm doing is as follow:
- I start the broker
- I run my code to connect to the broker. After connection the code waits for an input to proceed to publish
- I kill the broker
- I press enter to proceed to publish the message
I would expect an error with the token returned by the publish function if token.Error() != nil {...}
but I got none.
Here is the code of the publish function:
...ANSWER
Answered 2021-May-27 at 20:17From the docs:
QUESTION
I have small code which reads 100 MB file from Google cloud storage and then return output.
Code works fine for 1MB file but fails for 100 mb file.
Below is the code which is not working
...ANSWER
Answered 2021-May-19 at 02:39io.copy was trying to copy the details but OS was not allowing it. it was throwing error as (*net.OpError)(0xc0003302d0)(write tcp [::1]:80->[::1]:63014: wsasend: An established connection was aborted by the software in your host machine
QUESTION
I want to build a series of paths with serial numbers through a for
loop, so I use a series of strcpy
and strcat
(I know there is a string
method, but please forgive me, my technique is really poor). But after the loop, I get a series of the same results.
Here is my code:
...ANSWER
Answered 2021-May-13 at 05:05Your vector's elements are all the same pointer value, the address of the array TempFilePathChar
. In your loop you are overwriting the content of that array so you are always getting the content produced by the last iteration of the loop.
QUESTION
I want to generate random number between two numbers in C (Kernel). It's easy in C with standard library, but in C without library, I just found this links: link 1, link 2 and I don't know how can I use the codes are in links.
I cannot show my code. Because my code is too long (+1000 lines of code).
Edit
Here is my incomplete code:
...ANSWER
Answered 2021-May-12 at 08:37I usually do a function to generate a random number up to, and excluding, n
QUESTION
Let's say we have (delete) goroutine, that delete some files and send the deleted files count (counter) to (main) through a channel.
example:
ANSWER
Answered 2021-May-07 at 19:30A common option is to buffer the output and flush it at regular intervals, which will allow for all different types of output to be accumulated:
QUESTION
I am trying to create a grpc server with the hep of grpc-web wrapper. The idea is to use this grpc server both with browser based application as well as with the normal grpc client. But i am confused how can i make it work for both the applications?
...ANSWER
Answered 2021-Apr-28 at 21:33As per the comments the issue is that you are were attempting to connect to a gRPC-Web server using a gRPC client. gRPC and gRPC-Web are different wire protocols (gRPC-Web was created because web browser APIs don't provide sufficient control over HTTP/2 requests to implement gRPC). This blog post provides a good overview.
Because you are building a web-app you will need to use gRPC-Web; if you also wish to connect to your server using a go client then the preferred option is to use gRPC (the server can both simultaneously). Another option that could work would be to use a gRPC-Web client but I've not tried this (it will be less efficient).
The 'official' way of running gRPC-Web is via an envoy plugin but as you are writing this in Go improbable-eng/grpc-web provides another, simpler, option which you are already utilising (they also have a proxy but that makes deployment more complex).
Your server needs to be altered to run both gRPC and gRPC-Web. The simplest option is to run these on different ports (it may be possible to use a mux to detect the content-type but this is not something I've tried; it does work well if you want to serve html/js and gRPC-Web on a single port).
The approach I'd take to run both servers follows (please treat this as incomplete pseudo code, I have pulled bits from a few of my applications but have not compiled/tested etc; feel free to update when you discover issues!):
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