Advertisements 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… Read More sse4 packed sum between int32_t and int16_t (sign extend to int32_t)
Advertisements 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… Read More Python: Filling a dataframe sequentially based on matching ids (inefficient code)
Advertisements 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… Read More Field '_areas' should be initialized because its type 'List<Area>' doesn't allow null
Advertisements 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… Read More How to create a ranking variable/function for different periods in a panel data?
Advertisements As far as I understand .NET concepts, the source code is first translated into an Assembly (IL code+meta data), which is compiled to machine code on the target machine with the CLR’s JIT compiler. However I cannot really match these concepts to what I see when working on a C# project. When I build… Read More Understanding .NET compilation
Advertisements I’m making a program to add items to a LIFO (last in first out) array, where the elements are inserted at the start of the array. Here is my code: typedef struct neud{ int num; struct neud *next; }neud; void add(neud** head,int val){ //creat a new neod neud* newNeod; newNeod = malloc(sizeof(neud)); //assigning newNeod->num… Read More I'm having a problem understanding double pointers
Advertisements I’m making a program to add items to a LIFO (last in first out) array, where the elements are inserted at the start of the array. Here is my code: typedef struct neud{ int num; struct neud *next; }neud; void add(neud** head,int val){ //creat a new neod neud* newNeod; newNeod = malloc(sizeof(neud)); //assigning newNeod->num… Read More I'm having a problem understanding double pointers
Advertisements 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);…}… Read More Expandable Importrange
Advertisements I got a google add-on, and I am making an email, with a form, but I don’t know how to send there answer to a server, or if possible, send there answer as a reply to the email, and make it to where the question is required, and also have addresses suggested while there… Read More How do I set a form to send the response somewhere?
Advertisements What I want here is for the Nans to ultimately be integer values. Since my dataset is 1000s of columns, I can’t just change a couple of columns to make them integer and when I tried df = df.astype(‘int’) in Dask, after changing the values to 0 floats, for whatever reason, it didn’t work.… Read More Filling NAs to string 0 and then to int reverts to float