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Guys, pengen bahas cloud ni. Enaknya bikin tutorial apa ya?

Pengen menghidupkan playlist ngobrol2 lagi. Rencana nya pengen buat QnA kuliah IT di luar negeri. Adakah yang ingin ditanyakan? Silahkan drop di kolom komentar ya 😊

#MiniZinc #GlobalCardinality

1. global_cardinality(x, v, c)
This constraint ensures that each value v[i] appears exactly c[i] times among the variables in the array x.

Example: Suppose we have an array x = [x1, x2, x3, x4] and we want the value 1 to appear exactly 2 times, and the value 2 to appear exactly 2 times as well. We could define v = [1, 2] and c = [2, 2]. The constraint global_cardinality(x, [1, 2], [2, 2]) would be satisfied by solutions like x = [1, 1, 2, 2] or x = [2, 1, 1, 2].

2. global_cardinality_closed(x, v, c)
This version of the GCC constraint is similar to global_cardinality but it also ensures that only the values listed in v appear in x. It's a "closed" version meaning that no other values except those specified are allowed.

Example: Given x = [x1, x2, x3, x4], to enforce that only the value 1 appears exactly 2 times and the value 2 appears exactly 2 times, with no other values allowed, we would use global_cardinality_closed(x, [1, 2], [2, 2]). In this case, x = [1, 1, 2, 2] is a solution, but x = [1, 1, 2, 3] is not, because the value 3 is not allowed.

3. global_cardinality_low_up(x, v, lo, hi)
This constraint allows for a range (specified by lo and hi) for how many times a value v[i] can appear in the array x.
Example: If we want the value 1 to appear 1 to 3 times and the value 2 to appear 2 to 4 times in the array x = [x1, x2, x3, x4, x5], we could define v = [1, 2], lo = [1, 2], and hi = [3, 4]. The constraint global_cardinality_low_up(x, [1, 2], [1, 2], [3, 4]) would be satisfied by x = [1, 2, 2, 1, 2].

4. global_cardinality_low_up_closed(x, v, lo, hi)
This constraint combines the "closed" aspect of global_cardinality_closed with the flexible cardinality ranges of global_cardinality_low_up, ensuring that only the specified values appear in x, each within their respective ranges.

Example: For an array x = [x1, x2, x3, x4, x5] where we want only the values 1 and 2 to appear, with 1 appearing 1 to 3 times and 2 appearing 2 to 4 times, we would use global_cardinality_low_up_closed(x, [1, 2], [1, 2], [3, 4]). A valid solution could be x = [2, 1, 2, 1, 2], ensuring no other values are present and each value appears within its specified range.

#Jupyternotebook #Error

If you get error like: 
ImportError: cannot import name 'PLUGINS' from 'mistune'  
or another error that related about mistune or if you try to open the jupyter notebook but you get 500: internal server error. Then you can try to upgrade the jupyter-server using this command:

!pip install --upgrade jupyter-server

#HTML #Jupyternotebook #Googlecollab #Error

Sometimes jupyter notebook or google collab produce weird error when we try to export our notebook into html format. This is common error:

[95](https://github.com/mrdbourke/pytorch-...)
    metadata['widgets'][WIDGET_STATE_MIMETYPE]['state'] if
[96](https://github.com/mrdbourke/pytorch-...)
KeyError: 'state'

While at first, I thought that it comes from ipywidget library, but even after I remove the ipywidget, this eror still can occur. Here is the step to solve thats problem:

1. Open .ipynb file in notepad
2. Copy file JSON contents
3. Go to https://jqplay.org/
4. Paste contents into JSON field
5. Copy/paste del(.metadata.widgets) into filter pane (Thanks @hs211216)
6. Copy result from right Result field
7. Paste into original .ipynb file
8. Save file and exit

It should work now

Source: 
ndjhartman in https://github.com/jupyter/nbconvert/...

#UTM #vm #linux #macos #copyclipboard

Ingin copy paste text dari host os ke guest os (saya pakai linux lubuntu as guest os):
1. Centang enable share clipboard di UTM setting -> tab sharing
2. Run apt-get install spice-*  di terminal
3. Reboot

#Linux

Cara run linux command ketika reboot secara otomatis dengan crontab

1. Ketik crontab -e
2. Scroll down ke baris paling bawah
3. Ketik @reboot xxxx dimana xxxx adalah linux command kamu
4. Jangan lupa save dan exit dari "crontab -e"
5. Lakukan reboot

#OBS #RecordingProblem #RecordingSolution

Bagi yang record screen di OBS studionya tidak full screen maka bisa lihat ini: https://www.youtube.com/watch?v=7RgdQ...

#TechEvent #JuaraGCP

Juara GCP is coming bro: 
https://events.withgoogle.com/juaragcp8/

Quick Tips #11:

.DS_Store (Desktop Services Store) adalah file berisi informasi setiap file dan jendela pada sebuah folder di Finder. 
File ini sangat menyebalkan ketika kita bekerja dengan git dia akan ikut ter-commit, setelah sekian lama mencari caranya untuk mengabaikan dia, maka saya menemukan step-step ini:

1. Buat file .gitignore
2. Masukkan manual ke .gitignore dengan cara mengetik .DS_Store atau dengan perintah terminal Create echo .DS_Store >> .gitignore
3. Setelah itu, kedepannya .DS_Store akan diabaikan ya, tapi yang sekarang sudah terlanjur ada di folder kita atau di github perlu dihapus juga dengan script: find . -name ".DS_Store" -delete

Nah selesai. Memang file-file kecil tersembunyi kayak gini kadang bikin angry-angry wkwk