sse4 packed sum between int32_t and int16_t (sign extend to int32_t)

I have the following code snippet (a gist can be found here) where I am trying to do a sum between 4 int32_t negative values and 4 int16_t values (that will be sign extend to int32_t). extern exit global _start section .data a: dd -76, -84, -84, -132 b: dw 406, 406, 406, 406 section… Read More sse4 packed sum between int32_t and int16_t (sign extend to int32_t)

Python: Filling a dataframe sequentially based on matching ids (inefficient code)

Tables and code at the bottom will probs help much more than description. I have a solution that works but think its very inefficient see bottom. Problem: I have two data frames df_1 and df_2 — these dataframes have a match column – match_id df_2 has a date column that I am trying to write… Read More Python: Filling a dataframe sequentially based on matching ids (inefficient code)

Field '_areas' should be initialized because its type 'List<Area>' doesn't allow null

Flutter shows error Non-nullable instance field ‘_areas’ must be initialized. Maybe this is because of not defining null in lists areas what when defining null Like List? _areas; it shows an error on the index Error: Field ‘_areas’ should be initialized because its type ‘List’ doesn’t allow null. Error Line: List _areas; Here is my… Read More Field '_areas' should be initialized because its type 'List<Area>' doesn't allow null

How to create a ranking variable/function for different periods in a panel data?

I have a dataset, df, that looks like this: Date Code City State Population Quantity QTDPERCAPITA 2020-01 11001 Los Angeles CA 5000000 100000 0.02 2020-02 11001 Los Angeles CA 5000000 125000 0.025 2020-03 11001 Los Angeles CA 5000000 135000 0.027 2020-01 12002 Houston TX 3000000 150000 0.05 2020-02 12002 Houston TX 3000000 100000 0.033 2020-03… Read More How to create a ranking variable/function for different periods in a panel data?

Expandable Importrange

I am combining several spreadsheets with identical layouts into one master, and want to create a way to have my query({importrange}) be dynamic, as I will be adding / removing some sheets as time goes on. I have all of my sheet addresses in column C, so my formula right now looks like: =QUERY({Importrange(C4,Sheet1!C5:F);Importrange(C5,Sheet1!C5:F);…} This… Read More Expandable Importrange