littlebat - 第128页 - 学习日记

If an activity diagram can't express interaction?

If "actionstate A" will call "actionstate A1",and "actionstate A1" will call "actionstate A11",then there is an "actionstate B" after "actionstate A"...

Can the activity diagram express these interaction?

A sad truth,there isn't sequence diagram in ArgoUML.If the activity diagram can't express the interaction between Objects,I will use collaboration diagram to express these model in my design phase of Filesharing module.

Our project on tigris.org have gained approval

Yesterday,I found it.This maybe is a good new begin for our project.But,I think there is too long way to go for us.Good luck!

NCE L19-22,Star to P27

A little a day,don't stop you step,it's an advance even a centimetre!

use activity diagram to model a system

Only a flavouring.

I found to use activity diagram to build a system model is a good choice for me.Instead of modeling with sequence diagram,I model another model of filesharing with activity diagram.

Now I have finished the analysis model,base on this,I will make a design model in my spare time.

NCE L19:can,could,may,might

1.request permission;

polite:can(friends and equals)<could,may<might(superior)

2.may/might + infinitive

may/might + perfect infinitive

3.may/might as well + infinitive

for example:

I might as well play game( as learn english-it makes no difference).

remember some triangle functions

(1)sinA+sinB=2sin((A+B)/2)cos((A-B)/2);

(2)sinA-sinB=2cos((A+B)/2)sin((A-B)/2);

(3)cosA+cosB=2cos((A+B)/2)cos((A-B)/2);

(4)cosA-cosB=-2sin((A+B)/2)sin((A-B)/2);

I haven't finish today's learning plan-only finished 4 pages of 10 pages.That's ok,I am a lazy man today.I am not a machine.

"have" and "have got"-L18

When "have" expresses the meaning of "possess",it equal to "have got".

For example:

This sock has (got) a hole in it.

This room has (got) four windows.

But in the sentence below,it cann't be replaced by "have got":

They had a good time at the party.

its meaning is:to enjoy or suffer;experence,often as part of a group

At this viewpoint,"have" is a unversal word.for example:have meal,have letter,have a look,have it...

We can view these in LONGMAN dictionary.p701-702

作者：littlebat