Hi Christophe Thanks, but is there anything more to the syntax. Also how do you use that optional context parameter with this within the loop and for what enhanced value/processing does it give you?
On Mon, Apr 12, 2010 at 4:59 AM, Christophe Decaux < [email protected]> wrote: > If I understand well, what you're asking for is pretty close to what you > suggested in your original post: > > hashToBeTested.each(function(pair){ > if(valueToTest==pair.value){ > hashToBeTested.unset(pair.key); > } > } > > > Christophe > > Le 10 avr. 2010 à 12:36, chrysanthe m a écrit : > > Hi, again > Sorry for being obtuse. But can someone help me and even understand how to > write a function and call it on a hash that will take a value, compare it > against each of the keys in the hash, on match delete the key/value, and > return the hash. tia. > > On Thu, Apr 8, 2010 at 5:24 PM, chrysanthe m <[email protected]>wrote: > >> Hi Alex >> Thanks, but a newbie here so that was "drinking at a firehose". Let me >> parse it to better understand. >> First can you really invoke on two separate enumerable objects with that >> [n,n1,n2] syntax? That is tremendous. >> My problem is I need to first check the presence of a key before I unset >> it b/c I found out unset-ing a non-existent key seems to zero the struct; >> also it is more courteous, grin. So how would I construct the and >> parameterize the annonymous function to do the check and if present "do it >> to itself". Ideally I would like to pass in the enumerable, call the >> function and return the modified(or not) enumerable in the function's >> return. >> >> On Thu, Apr 8, 2010 at 4:41 PM, Alex Wallace <[email protected]>wrote: >> >>> Ah, I see. You can handle this using Enumerable's invoke. This code >>> should make it clear: >>> >>> a = new Hash({ x : "foo", y : "bar" }); >>> b = new Hash({ x : "zam", y : "moof" }); >>> a.get("x"); >>> "foo" >>> b.get("x"); >>> "zam" >>> [a,b].invoke("get","x"); >>> ["foo", "zam"] >>> [a,b].invoke("unset","x") >>> ["foo", "zam"] >>> a.get("x") >>> (undefined) >>> >>> Cheers, >>> Alex >>> >>> On Thu, Apr 8, 2010 at 3:24 PM, chrysanthe m <[email protected]>wrote: >>> >>>> Sorry sudden send resume in this reply >>>> >>>> Hello >>>> I am having a difficult time trying to enumerate a hash to determine if >>>> a give key is in the hash and if so delete it and its value. >>>> If I could approach it index it would be >>>> function remove(valueToTest, hashToBeTested){ >>>> for(i=0;i<hashToBeTested.length;i++){ >>>> if(valueToTest==hashToBeTested[i]) >>>> hashToBeTested.unset(valueToTest); >>>> } >>>> >>>> Would I do it like >>>> >>>> hashToBeTested.each(function(valueToTest){ >>>> if(valueToTest==this)hashToBeTested.unset(valueToTest); >>>> },hashToBeTested); >>>> return hashToBeTested; >>>> >>>> >>>> which I am sure is wrong syntactically if not semantically. Can someone >>>> guide the proper way and more deeply the use of this? >>>> >>>> >>>> On Thu, Apr 8, 2010 at 3:06 PM, chrysanthe m <[email protected]>wrote: >>>> >>>>> >>>>> >>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Prototype & script.aculo.us" group. >>>> To post to this group, send email to >>>> [email protected]. >>>> To unsubscribe from this group, send email to >>>> [email protected]<prototype-scriptaculous%[email protected]> >>>> . >>>> For more options, visit this group at >>>> http://groups.google.com/group/prototype-scriptaculous?hl=en. >>>> >>> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Prototype & script.aculo.us" group. >>> To post to this group, send email to >>> [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]<prototype-scriptaculous%[email protected]> >>> . >>> For more options, visit this group at >>> http://groups.google.com/group/prototype-scriptaculous?hl=en. >>> >> >> > > -- > You received this message because you are subscribed to the Google Groups > "Prototype & script.aculo.us" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/prototype-scriptaculous?hl=en. > > > -- > You received this message because you are subscribed to the Google Groups > "Prototype & script.aculo.us" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<prototype-scriptaculous%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/prototype-scriptaculous?hl=en. > -- You received this message because you are subscribed to the Google Groups "Prototype & script.aculo.us" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/prototype-scriptaculous?hl=en.
