On May 25, 2017, at 6:25 PM, Vikram Rawat wrote:
>
> Hello Bakul,
>
> I am just an R programmer(by which i mean i don't understand programming
> much). I was looking for an alternative way to python. I really don't
> understand what you said but i want to let you all know one thing.
>
> Engli
would not it be nice to write []string{"hello}.Map(strings.ToUpper) ?
And so for userland types the language accept,
[]*MyType.Filter(func(*MyType)*MyType).Map(...).First()//etc.
IRL, because the total lack of such struct in the language might let you
think the idea is superfluous with the cur
as i m on it,
please consider, what below code might be with little imagination,
// Create a new Tomate
func (t Controller) Create(postColor *string) (jsonResBody *Tomate, err error) {
mustNot(postColor, nil) or
return ... &UserInputError{errors.New("Missing color parameter")}
co
for the fun,
I want to write
[]string{"hello}.Map(strings.ToUpper).Each(fmt.Println)
would not work, func param are incompatible.
let s apply static rules to convert it,
printS, err := conv(func(s string), fmt.Println) or panic(err)
[]string{"hello}.Map(strings.ToUpper).Each(printS)
Now it s
or this,
printS, err := conv(func(s string, err error), fmt.Println) or panic(err)
_, err := []string{"hello}.Map(strings.ToUpper).MustEach(printS) or
panic(err)
count, err := conv(func(n int), fmt.Println) or panic(err)
n := []string{"hello}.Map(strings.ToUpper).Sum(count)
count, err := conv(f
oops... mistake in it.
printS, err := conv(func(s string, err error), fmt.Println) or panic(err)
_, err := []string{"hello}.Map(strings.
ToUpper).MustEach(printS) or panic(err)
count, err := conv(func(s string) n int, fmt.Println) or panic(err)
n := []string{"hello}.Map(strings.ToUpper).Sum(coun
var str = "a/b/c/d/c"
// I want remove last chracter from str
var strRunes = []rune(str)
var newStrRunes = strRunes[0 : len(strRunes)-1]
// then I want get last index of chracters `/c`, I need convert
to string back!???
string
Hi,
On Fri, May 26, 2017 at 07:10:43AM -0700, long.a...@gmail.com wrote:
>var str = "a/b/c/d/c"
>// I want remove last chracter from str
>var strRunes = []rune(str)
>var newStrRunes = strRunes[0 : len(strRunes)-1]
>//
Hi, All,
I am trying to write a small program to handle packets coming from a GigE
wire. The testing code snip is as below.
The problem I am facing is that this is extremely slow, can only handle up
to 250Mbps-ish traffic with normal ipv4 sized packets, anything above that
resulting signific
As a baseline measurement I suggest writing the same code in C; this shows
how much your VM / config / machine can handle.
With gopacket -- use src.NextPacket instead of Packets.
There are also: https://github.com/akrennmair/gopcap
and https://github.com/miekg/pcap
+ Egon
On Friday, 26 May 20
Good point.
as a comparison: tcpdump -w /dev/null can handle up to 750Mbps, where
sending machine's speed limit reached. I think it should be able to handle
line rate.
Are those two packages lighter/faster than gopacket?
Thanks,
Chun
On Friday, May 26, 2017 at 12:37:55 PM UTC-4, Egon wrote
This might be a silly question, but I’m going to ask anyway. I'm working on
a High-Frequency Trading program for educational purposes. I don’t expect
it to make money; it’s a fun project to learn about socket programming.
It will be a single-threaded program running on one CPU that will “ta
Why do you say it will be single threaded?
I ask as even with a single core multiple threads can be beneficial.
Even with GOMAXPROCS=1 the go runtime will multiplex multiple requests
efficiently without you thinking about it.
On Fri, 26 May 2017 at 19:32, wrote:
> This might be a silly questi
The brokerage firm's servers are in NYC. In order to get server co-location
I’m considering renting our a virtual server in NYC from a company called
Linode. Their servers start at $5 a month at this price point you get one
CPU for your virtual server.
I did not know multiple threads can be be
On Sat, May 27, 2017, 7:46 AM wrote:
> The brokerage firm's servers are in NYC. In order to get server
> co-location I’m considering renting our a virtual server in NYC from a
> company called Linode. Their servers start at $5 a month at this price
> point you get one CPU for your virtual server.
I'm trying to pass arguments to go test using
go test -args -flag1 val1 -flag2 val2
Documentation doesn't explain how one can extract flag1 and flag2 or their
values from within the test.
I am using os.Args to get to them, but that feels like a hack.
The only documentation I see right now
in
On Fri, May 26, 2017 at 1:32 PM, E Leong wrote:
>
> I'm trying to pass arguments to go test using
>
> go test -args -flag1 val1 -flag2 val2
>
> Documentation doesn't explain how one can extract flag1 and flag2 or their
> values from within the test.
> I am using os.Args to get to them, but that fe
On Friday, 26 May 2017 20:51:55 UTC+3, Chun Zhang wrote:
>
> Good point.
> as a comparison: tcpdump -w /dev/null can handle up to 750Mbps, where
> sending machine's speed limit reached. I think it should be able to handle
> line rate.
>
> Are those two packages lighter/faster than gopacket?
>
On Friday, 26 May 2017 21:32:43 UTC+3, David Streckert wrote:
>
> This might be a silly question, but I’m going to ask anyway. I'm working
> on a High-Frequency Trading program for educational purposes. I don’t
> expect it to make money; it’s a fun project to learn about socket
> programming.
>
If I delegate the handling of a request, but still want information about
the response (status code, compressed, content length).
How should that information be returned without risk of leaving the
connection open?
Close the response body and return the response?
Close the response, transfer th
Thanks for your reply. the `str[0:len(str)-1]` not work for NO ascii
chracters.
https://play.golang.org/p/7i6-3Zcy36
On Friday, May 26, 2017 at 11:06:10 PM UTC+8, messju mohr wrote:
>
> Hi,
>
> On Fri, May 26, 2017 at 07:10:43AM -0700, long...@gmail.com
> wrote:
> >var str
I find the method like:
package main
import (
"fmt"
"strings"
"unicode/utf8"
)
func main() {
var str = "a/b/汉字/d/汉字"
var _, size = utf8.DecodeLastRuneInString(str)
// Does `str[0:len(str)-size]` have memory copy?
var i = strings.LastIndex(str[0:len(str)-size], "/汉字")
fmt.Println(i)
}
blog.golang.org/slices and blog.golang.org/strings
-rob
On Sat, May 27, 2017 at 11:14 AM, wrote:
> I find the method like:
>
> package main
>
>
> import (
> "fmt"
> "strings"
> "unicode/utf8"
> )
>
>
> func main() {
> var str = "a/b/汉字/d/汉字"
> var _, size = utf8.DecodeLastRuneInString(str
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