range_check | Check if a IPv4 and/or IPv6 is within a range | TCP library
kandi X-RAY | range_check Summary
kandi X-RAY | range_check Summary
Check if a IPv4 and/or IPv6 is within a range
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QUESTION
My goal is to create a function that would check whether a number is in a given range.
So, I've created a function range_check() that takes three arguments - number, low and high. I've also created 4 test cases that are stored as tuples. The first three test cases are true, the last one is false.
...ANSWER
Answered 2020-May-27 at 18:03the lambda
function can't unpack the arguments automatically. map
passes the tuple
to the function, not 3 arguments. You have to take one argument as a tuple
and access the elements:
QUESTION
I used to build my dynamic library for Centos7 in Docker and everything worked until something happened (or I changed something) and now the .so requires libstdc++ with glibcxx 3.4.20. How to downgrade the requirement? Thanks!
Note that:
- I don't need to supply libstdc++ with the library
- I can't install new packages
- I don't need to update LD_LIBRARY_PATH as suggested in many posts
- I can't upgrade GCC or link stdc++ statically
I only need to know why it got upgraded and how to get it back.
upd: If I do objdump, I get following symbol:
...ANSWER
Answered 2019-Nov-24 at 17:06But why it started using it and didn't use throw_out_of_range_fmt before?
You started to use some feature that you didn't use before. Guesses:
- You enabled exceptions and they were disabled before or,
- You are now calling
std::vector::at
that you didn't call before.
You can find out exactly where the reference to _ZSt24__throw_out_of_range_fmtPKcz
is coming from by adding -Wl,-y,_ZSt24__throw_out_of_range_fmtPKcz
to the link line for your library. That will tell you which .o
in your library needs the symbol.
Use objdump -dr foo.o
to look for reference to the symbol, and you'll know which of your functions is calling it.
As Jesper Juhi commented already, if you need you library to work with pre-GCC-4.9 libstdc++
, you should build it with pre-GCC-4.9 compiler.
QUESTION
Please pardon for this trival question
Given a set of Ip the set is quite large and might increase https://github.com/client9/ipcat/blob/master/datacenters.csv#L4
Small example set - first column start ip second - end ip range
I will get the user ip from the request . I need to check if the ip falls in these set of ranges . How do i accomplish this.
I have looked into ip_range_check and range_check.
But they donot check for a ip given given range . How is thhis possible in node js with utmost performance. I dont want to go for a exhaustive search as performance is a hight priority.
Please help something new and quite challenging so far to me.
...ANSWER
Answered 2017-Sep-13 at 14:52//Use getCIDR from rangecalc
getCIDR("5.9.0.0", "5.9.255.255")
//This return 5.9.0.0/16
//You can then use ipRangeCheck from ip_range_check
ipRangeCheck("IP TO BE CHECKED", "5.9.0.0/16")
//returns true or false
QUESTION
I know that in an assignment to the constrained subtype from the base type I am at risk to a Range_Check exception at runtime if I don't ensure that the value is within range prior to assignment.
But is this also true when performing a comparison? I would think that since the only knowledge the user wants back is a Boolean result, that no implicit conversion to the base type or range checking would be needed.
Please Note: I am looking for an answer that references the Ada95 LRM.
Example ...ANSWER
Answered 2017-Apr-19 at 21:46You may find the Annotated ARM version (AARM95 3.2) helpful (note, your references were to the unmaintained AdaHome web site; prefer http://www.adaic.org).
A subtype has a type and possibly constraints:
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