I just discovered this interesting issue: int done = 50; int? total = 100; var perc = done * 100 / total; // No problem // Error: Argument 2: cannot convert from 'int?' to 'byte' // Argument 1 is...

how can I transform the string "620/100" into "6.2" in a bash script The context of my question is about image processing. EXIF data are coding the focal length in fractional format, while I need ...

I have a web application that throws the following error when running in IE: Illegal operation attempted on a registry key that has been marked for deletion It works fine in Chrome. Unfortuna...

I want to transfer data from one Cassandra cluster (reached via 192.168.0.200) to another Cassandra cluster (reached via 127.0.0.1). The data is 523 rows but each row is about 1 MB. I am using the ...

I am learning C++ using C++ Primer 5th edition. In particular, i read about void*. There it is written that: We cannot use a void* to operate on the object it addresses—we don’t know that object’s...

Is there a way that you can preform a dot product of two lists that contain values without using NumPy or the Operation module in Python? So that the code is as simple as it could get? For example...

#!/usr/bin/env python3 import binascii var=binascii.a2b_qp("hello") key=binascii.a2b_qp("supersecretkey")[:len(var)] print(binascii.b2a_qp(var)) print(binascii.b2a_qp(key)) ...

Hi I want to (multiply,add,etc) vector by scalar value for example myv1 * 3 , I know I can do a function with a forloop , but is there a way of doing this using STL function? Something like the {Al...

I am interested in implementing this paper on Kronecker Recurrent Units in TensorFlow. This involves the computation of a Kronecker Product. TensorFlow does not have an operation for Kronecker Pro...

I have a list of lists, each containing a different number of strings. I'd like to (efficiently) convert these all to ints, but am feeling kind of dense, since I can't get it to work out for the li...

I need to find the max and min value in a dataframe "df" like this: col1 col2 col3 7 4 5 2 NA 6 3 2 4 NA NA 1 The result should be: min = 1 and max = 7. I have used this function: m...

I'm currently learning Python and I am just wondering in what situation one would use .remove() rather than .discard() when removing values from a set. Since .discard() does not raise an erro...

I have tried both: smthng = ANY (select id from exmplTable) smthng IN (select id from exmplTable) and I am getting the same results for my data. Is there any difference for the two expressions?...

I am looking to do the following operation in python (numpy). Matrix A is M x N x R Matrix B is N x 1 x R Matrix multiply AB = C, where C is a M x 1 x R matrix. Essentially each M x N layer of ...

I'm reading java OCA certification documentation. Some primitive operations behavior seems realy strange for me. it is said that all byte, short and char value are automatically widening t...

Sometimes I must do something on the main thread and its suggested to place the code inside a OperationQueue.main.addOperation. Other times, its suggested to write the code inside DispatchQueue.ma...

I need only even or odd items, so I find modulus operation and this doesn't works SELECT * FROM table ORDER BY id WHERE MOD (num, 2) = 1 ASC; Please help me, I'm noob in sql, as I haven't done m...

public String size(int size){ String hrSize = ""; int k = size; double m = size/1024; double g = size/1048576; double t = size/1073741824; DecimalFormat dec = new DecimalFormat("0.00"); if...

I'm doing a message inspector in WCF: public class LogMessageInspector : IDispatchMessageInspector, IClientMessageInspector which implements the method: public object AfterReceiveRequest(ref M...

byte a = 1; byte b = 1; byte c = a + b; Throws error: possible loss of precision byte subt = a_s - a_b; ^ required: byte found: int Is this behavior has something to do with jvm or its been...

I'm getting two type of information with JSON and I'm adding "operations" to 2 different Operation Queues Classes with addObserver(forKeyPath:"operations"...). In the function observeValue I'm chec...

I'm was doing a manual operation with TEST (Parity flag operation), the problem it's that i can't get the right result, consider this: ax = 256 = 0000 0001 0000 0000 so if i do: test ah, 0x44 t...

Why if int x = -1 // binary: 11111111111111111111111111111111 x = x >>> 31; we have 00000000000000000000000000000001 but if int x = -1 x = x >>> 32; we have 111111111111...

Couldnt think of a better title. Well the problem is: I have the "int i", it can be any value. my goal is to transform the "int i" to the closest number divisible by 16. For example, I got i = 33...

In store, there is an event beforeload: beforeload( Ext.data.Store store, Ext.data.Operation operation, Object eOpts ) by listening to this event, i can add my additional param to operation when...