How to implement an if condition on a period

[Mahdi Ben Jelloul]

Hello fellow LIAM2 users,

I am trying to implement a reform that change at some period REFORM_PERIOD.

I would like to avoid computing (and store see below) some fields.

My best implementation so far is to use while:

condition: period >= REFORM_PERIOD

while (condition):

    - some_code()

    - condition: False

Could I do better than this ?

Imagine know that I want to store the field variable_before is stored only until REFORM_PERIOD and then variable_after only after REFORM_PERIOD.

If i do not run anything involving redifining the field variable_before after period  REFORM_PERIOD, do I save writing it on disk ?

Same for variable_after ?

What if I use it by inadvertance in another formula on some period after REFORM_PERIOD ? What is the value I get ?

Thanks,

Mahdi

   

[Gaëtan de Menten]

Hello Mahdi,

 

See my answers in the text.

 

Gaëtan

 

From: liam2...@googlegroups.com <liam2...@googlegroups.com> On Behalf Of Mahdi Ben Jelloul
Sent: Thursday, December 13, 2018 14:03
To: liam2-users <liam2...@googlegroups.com>
Subject: [liam2-users] How to implement an if condition on a period

 

Hello fellow LIAM2 users,

 

I am trying to implement a reform that change at some period REFORM_PERIOD.

I would like to avoid computing (and store see below) some fields.

 

My best implementation so far is to use while:

 

condition: period >= REFORM_PERIOD

while (condition):

    - some_code()

    - condition: False

 

Could I do better than this ?

 

No, not that I know of, but it should not be that hard to implement an "if" block in liam2 (probably named something else than if to avoid a collision with the if expression): almost a copy paste of the while code.

 

Imagine know that I want to store the field variable_before is stored only until REFORM_PERIOD and then variable_after only after REFORM_PERIOD.

If i do not run anything involving redifining the field variable_before after period  REFORM_PERIOD, do I save writing it on disk ?

Same for variable_after ?

 

What if I use it by inadvertance in another formula on some period after REFORM_PERIOD ? What is the value I get ?

 

Sorry, you lost me here. Could you adapt your example to show what you mean?

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[Mahdi Ben Jelloul]

On Thu, Dec 13, 2018 at 3:06 PM Gaëtan de Menten <g...@plan.be> wrote:

Hello Mahdi,

 

See my answers in the text.

 

Gaëtan

 

From: liam2...@googlegroups.com <liam2...@googlegroups.com> On Behalf Of Mahdi Ben Jelloul
Sent: Thursday, December 13, 2018 14:03
To: liam2-users <liam2...@googlegroups.com>
Subject: [liam2-users] How to implement an if condition on a period

 

Hello fellow LIAM2 users,

 

I am trying to implement a reform that change at some period REFORM_PERIOD.

I would like to avoid computing (and store see below) some fields.

 

My best implementation so far is to use while:

 

condition: period >= REFORM_PERIOD

while (condition):

    - some_code()

    - condition: False

 

Could I do better than this ?

 

No, not that I know of, but it should not be that hard to implement an "if" block in liam2 (probably named something else than if to avoid a collision with the if expression): almost a copy paste of the while code.

 

Imagine know that I want to store the field variable_before is stored only until REFORM_PERIOD and then variable_after only after REFORM_PERIOD.

If i do not run anything involving redifining the field variable_before after period  REFORM_PERIOD, do I save writing it on disk ?

Same for variable_after ?

 

What if I use it by inadvertance in another formula on some period after REFORM_PERIOD ? What is the value I get ?

 

Sorry, you lost me here. Could you adapt your example to show what you mean?

Image ine variable_1 and variable_2 are field of some entity with only one member.

Basically what I want to know is which value is stored in the h5 file when I proceed as follows.

condition_1: period < REFORM_PERIOD

condition_2: period >= REFORM_PERIOD

while (condition_1):

    - variable_1: 1

    - condition_1: False

while (condition_1):

    - variable_2: 2

    - show(variable_1)

    - condition_2: False

What the show produce ? (I know i can try it myself ;-))

What is stored in the h5 for each period ?

Thanks

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Mahdi Ben Jelloul