arrays

问题 I have strings like var=test;path=test.html I want to convert these kind of strings like the array printed below : Array { var => test path => test.html, } I tried to use PHP's explode function for this task, but this is converting the string to associative array, and then i decided to convert that associate array to the one shown above. But my own code isn't what i'm looking for, 'cause it contain 2 times PHP's explode function and some foreach loops , thus my own code will not stand in the

问题 I have strings like var=test;path=test.html I want to convert these kind of strings like the array printed below : Array { var => test path => test.html, } I tried to use PHP's explode function for this task, but this is converting the string to associative array, and then i decided to convert that associate array to the one shown above. But my own code isn't what i'm looking for, 'cause it contain 2 times PHP's explode function and some foreach loops , thus my own code will not stand in the

问题 I follow this question Append multiple numpy files to one big numpy file in python in order to put many numpy files in one big file, the result is: import matplotlib.pyplot as plt import numpy as np import glob import os, sys fpath ="path_Of_my_final_Big_File" npyfilespath ="path_of_my_numpy_files" os.chdir(npyfilespath) npfiles= glob.glob("*.npy") npfiles.sort() all_arrays = np.zeros((166601,8000)) for i,npfile in enumerate(npfiles): all_arrays[i]=np.load(os.path.join(npyfilespath, npfile))

问题 I follow this question Append multiple numpy files to one big numpy file in python in order to put many numpy files in one big file, the result is: import matplotlib.pyplot as plt import numpy as np import glob import os, sys fpath ="path_Of_my_final_Big_File" npyfilespath ="path_of_my_numpy_files" os.chdir(npyfilespath) npfiles= glob.glob("*.npy") npfiles.sort() all_arrays = np.zeros((166601,8000)) for i,npfile in enumerate(npfiles): all_arrays[i]=np.load(os.path.join(npyfilespath, npfile))

问题 I have two arrays: array1 = numpy.array([ 7.26741212e-01, -9.80825232e-17]) array2 = numpy.array([-3.82390578e-01, -1.48157964e-17], [-3.82390578e-01, 7.87310307e-01], [ 7.26741212e-01, -9.80825232e-17], [ 7.26741212e-01, -9.80825232e-17], [-3.82390578e-01, -2.06286905e-01], [ 7.26741212e-01, -9.80825232e-17], [-2.16887107e-01, 6.84509305e-17], [-3.82390578e-01, -5.81023402e-01], [-2.16887107e-01, 6.84509305e-17], [-2.16887107e-01, 6.84509305e-17]) How do I get the cosine distance of each row

问题 I want to make a program that generates 20 random numbers and search the array for a number. If one of the 20 random numbers was typed in the input the output should say "it is here". If the number is not in the ReadLine it should say"Yes it is there".I want to know how to make all 20 random numbers to be able to search. The code right now can only search the number on the right. Even if the input is one of the 20 random numbers except for the one on the right it would say "No it is not here.

问题 How can I make the function below constexpr ? This is a function that I use to create a POD struct that is defined in a "C" header file that I cannot change. I ended up with the following static function helper (which works) to make these structs, I believe it is not constexpr , as the strncpy call violates constexpr . static auto makeWPTEntry( const char* name, double aLatDeg, double aLatMin, double aLonDeg, double aLonMin, char bSeven = false, double aCourse = 0, double aAzimuth = 0, double

问题 I'm trying to learn SQL but hitting a wall with the following problem. I can solve it easily using imperative programming but would like to know if it's possible to solve this problem using just a query: Input Table 1 (users) ID | Firstname -------------- 1 | Felix 2 | Michael 3 | Tobias Table 2 (hobbies) ID | Hobby | User ------------------------ 1 | cooking | 1 2 | cat | 1 3 | piano | 2 Wanted Output { "users": [{ "firstname": "Felix", "hobbies": [{ "id": 1, "name": "cooking" }, { "id": 2,

问题 $days = ["Monday","Tuesday","Wednesday"]; $rates = [40,60,80]; $profit = []; foreach($days as $day => $value){ foreach($rates as $rate){ $netprofit = $rate* 20; $profit[$value] = [$rate=> $netprofit]; } } $usersChart = new UserChart; $usersChart->labels($days); foreach($profit as $key => $value){ $data = array(); foreach ($value as $values){ $data[] = $values; } $usersChart->dataset($key, 'line', collect($data)); } I want to show this array into Chartjs Line Graph. I want the x axis to be the

问题 $days = ["Monday","Tuesday","Wednesday"]; $rates = [40,60,80]; $profit = []; foreach($days as $day => $value){ foreach($rates as $rate){ $netprofit = $rate* 20; $profit[$value] = [$rate=> $netprofit]; } } $usersChart = new UserChart; $usersChart->labels($days); foreach($profit as $key => $value){ $data = array(); foreach ($value as $values){ $data[] = $values; } $usersChart->dataset($key, 'line', collect($data)); } I want to show this array into Chartjs Line Graph. I want the x axis to be the