error-handling

问题 In Tomcat (v8.5.24) an URL with a query parameter containing an unencode curly brace ("{") produces a 400 error. You can configure Tomcat to allow it with "relaxedQueryChars". But this is not what I want. I tried to write a custom error page and add it to web.xml <error-page> <error-code>400</error-code> <location>/error/error400</location> </error-page> But this does not work as Tomcat is really killing the request and does not process the error pages (org.apache.coyote.http11

问题 Error: ENOSPC: no space left on device, watch '/home/me/Desktop/Edu/Web/JS/React/weather_app/public' I have over 700gb free space on my HDD, so don't think it is related to the error. !After the error it became unavailable to run 'npm start' on any project present on my machine. Today I started work on my project that I left yesterday evening in a perfectly working state. I wanted to add redux to my React project. Steps I made were: Initializing a local git repository and commiting the key

问题 Error: ENOSPC: no space left on device, watch '/home/me/Desktop/Edu/Web/JS/React/weather_app/public' I have over 700gb free space on my HDD, so don't think it is related to the error. !After the error it became unavailable to run 'npm start' on any project present on my machine. Today I started work on my project that I left yesterday evening in a perfectly working state. I wanted to add redux to my React project. Steps I made were: Initializing a local git repository and commiting the key

问题 I've got an object with functions that throw errors, myObj = { ini:function(){ this.f(); }, f:function(){ throw new Error(); } }; but I only want to catch the exceptions where the object is created try{ var o = new myObj(); }catch(err){ alert("error!"); } it looks like i have to have try/catch blocks everywhere =/ to capture the error event in different function scopes try{ myObj = { ini:function(){ try{ this.f(); }catch(err){ alert("f threw an err"); } }, f:function(){ throw new Error(); } }

问题 Laravel has readable log and stacktrace when exception caught, for example: production.ERROR: Command "test" is not defined. Did you mean this? make:test {"exception":"[object] (Symfony\\Component\\Console\\Exception\\CommandNotFoundException(code: 0): Command \"test\" is not defined. Did you mean this? make:test at {root}/vendor/symfony/console/Application.php:618) [stacktrace] #0 {root}/vendor/symfony/console/Application.php(229): Symfony\\Component\\Console\\Application->find('test') #1

问题 Laravel has readable log and stacktrace when exception caught, for example: production.ERROR: Command "test" is not defined. Did you mean this? make:test {"exception":"[object] (Symfony\\Component\\Console\\Exception\\CommandNotFoundException(code: 0): Command \"test\" is not defined. Did you mean this? make:test at {root}/vendor/symfony/console/Application.php:618) [stacktrace] #0 {root}/vendor/symfony/console/Application.php(229): Symfony\\Component\\Console\\Application->find('test') #1

问题 I've always wondered how the Haskell exception system fits in with the whole "Pure functional language" thing. For example see the below GHCi session. GHCi, version 8.0.1: http://www.haskell.org/ghc/ :? for help Prelude> head [] *** Exception: Prelude.head: empty list Prelude> :t head head :: [a] -> a Prelude> :t error error :: [Char] -> a Prelude> error "ranch" *** Exception: ranch CallStack (from HasCallStack): error, called at <interactive>:4:1 in interactive:Ghci1 Prelude> The type of

问题 Note: I am asking this question after researching how to actually do it. Other questions which are somewhat similar, but actually differ from my question relate to: Color-coding within the python script Importing color libraries within the script Using tools like Solarized to improve tools like Vim to color-code python code. What I am looking for: I already have a simple python script (say, test.py) and I am executing it from the Gnome terminal. python test.py test.py will output some errors

问题 I have a function which performs string replacement in-place via regex::Regex::replace via a closure which performs some operations on the Captures : pub fn solve_dice_expression(expression: String) -> Result<i64, Box<dyn Error>> { lazy_static! { static ref PATTERN: Regex = Regex::new(r"(\d+)d(\d+)").expect("Problem compiling regex"); } // For every match on the Dice expression regex, roll it in-place. let rolled_expression = PATTERN.replace(&expression, |caps: &Captures| { let diceroll_str =

问题 I have a function which performs string replacement in-place via regex::Regex::replace via a closure which performs some operations on the Captures : pub fn solve_dice_expression(expression: String) -> Result<i64, Box<dyn Error>> { lazy_static! { static ref PATTERN: Regex = Regex::new(r"(\d+)d(\d+)").expect("Problem compiling regex"); } // For every match on the Dice expression regex, roll it in-place. let rolled_expression = PATTERN.replace(&expression, |caps: &Captures| { let diceroll_str =