Comments (5)
Javascript already has a finally. Just use it
co(function * () {
try {
// try to work
} catch (e) {
// handle your errors
} finally {
// cleanup
}
})
from co.
Javascript already has a finally. Just use it
Yes, all of us, know this, but the intend to use a module like co is invert this control...
to can use a finally in a generator without build a other generator method to wrap try, catch and finally
The same logic can be applied from catch too.. "javascript alreay has a catch" then why co need have one ?
Make sense ?
example:
const obj = {
insertInDb: function*(attrs){
//without try ...
}
}
co(obj.insertInDb(attrs)).catch(...).finally(..close connections etc)
from co.
Co doesn't add a catch either, because you don't need one. You use the js keywords
const obj = {
insertInDb: function*(attrs){
//without try ...
}
}
co(function * () {
try {
yield obj.insertInDb(attrs)
} catch e() {
...
} finally{
..close connections etc
}
})
from co.
The finally
in this line
co(obj.insertInDb(attrs)).catch(...).finally(..close connections etc)
Would have to be on the Promise.prototype
. co
returns Promises.
from co.
You can use .then() after .catch() it will work as .finally() https://stackoverflow.com/a/35999141/1753349
from co.
Related Issues (20)
- The co's then-function called before than thunkify function HOT 2
- Process yield undefined HOT 7
- Why can not choose Promise implement lib
- Using co in the browser HOT 1
- try/catch doesn't work HOT 1
- Set a sleep interval between each resolve? HOT 3
- there is something unsuitable about isGenerator and isObject function HOT 2
- Yielding to array of promises behavior
- isGeneratorFunction will return true when the obj is a generator
- Confused about the doc on yield generator
- Does it make sense to use control flow in the project's description?
- Promises still in the event Loop
- .catch and .then are both called when an exception is thrown HOT 2
- Add streams into yieldable list HOT 2
- why the objectToPromise function so complex ?
- Added type for `co`
- who can answer me ? what the 'co''s full name? thks! HOT 2
- .
- Why not support 'import'? HOT 1
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from co.