BlackLight | A light Sina Weibo client for Android

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Instead of defining a single title_field I would like to display a custom title depending on the contents of a document. According to the Blacklight Wiki this can be accomplished by setting config.index.document_presenter_class to a custom presenter:

I have an array of days, which I am mapping in my View but I am getting warning that Warning: Each child in a list should have a unique "key" prop., I am not able to understand why I am getting this error. I am new to react native, and I am trying to understand what every warning means

my code:

I've built a simple email subscription form with Django and Mailchimp. It works perfectly fine locally, however, after deploying it to DigitalOcean it doesn't seem to work. I thought it might be related to the database, but I did migrate on the server and haven't received any errors (using Ubuntu 20.04 on the server).

Hope someone has a clue and could assist me with this issue.

Here is the form: https://www.winoutt.io

views.py

I am reading the output in voltage of a turbidity sensor : https://www.dfrobot.com/product-1394.html?tracking=5b603d54411d5 with an Arduino UNO. I want to print the value of volts outage and its NTU (turbidity units) on an LCD screen ADM1602U Sparkfun.

I cant seem to print the dtata correctly on the lCD, it opens and lights up (so I think the wiring is ok) but no data appear.

Here is the code I am using:

I want to make a dark mode for my app, my only problem is that i cant change the text color in a fragment, the user is able to turn on/off the dark mode. That's why I can't change the theme in the manifest any solution for this problem?

I am using ionic to display videos in an iframe. I have tried using ionic's Insomnia and Blacklight, yet to no avail. When I play the video on an Android device, the screen goes dark after 30 seconds while the video keeps playing. How can I prevent the screen from going dark? For example when I use the YouTube app, my screen stays on the entire time without doing anything.

home.html

I am new to electronics and has completed a tutorial on how to operate a 16x2 Character LCD via I2C in Arduino using liquidCrystal_I2C. Everything works fine but I have a question about the low level interaction between the I2C and the LCD. Looking at the library's source code, I notice that when writing a 4 bits nibble (LiquidCrystal_I2C::write4bits), the code writes the nibble to the I2C expander first (LiquidCrystal_I2C::expanderWrite), and then writes again when pulsing the Enable bit. Why is the first expanderWrite necessary? Why can't write4bits just call pulseEnable (with the blacklight bit set)?

I am sure there is a reason as I checked other library like RPLCD and see a similar pattern. Can anyone enlighten me? Thank you.

I was running a Solr on Ubuntu 12.04 Tomcat6; we upgraded to 16.04 and Tomcat8, and the Solr stopped reading some indices. I believe the only indices that were affected are ones where the configuration directory is softlinked. Some Googling later, I found that allowLinking attribute was moved. This was my old config: