array

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This question already has an answer here: File to byte[] in Java 20 answers I want to convert an image to byte array and vice versa. Here, the user will enter the name of the image ( .jpg ) and program will read it from the file and will convert it to a byte array. 回答1: BufferedImage consists of two main classes: Raster & ColorModel . Raster itself consists of two classes, DataBufferByte for image content while the other for pixel color. if you want the data from DataBufferByte, use: public byte[] extractBytes (String ImageName) throws

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm looking for a simple way to create an array in php that will not allow duplicate entries, but allows for easy combining of other sets or arrays. I'm mostly interested in whether such a feature exists in the language because writing my own wouldn't be difficult. I just don't want to if I don't need to. 回答1: Just an idea, if you use the array keys instead of values, you'll be sure there are no duplicates, also this allows for easy merging of two "sets". $set1 = array ('a' => 1, 'b' => 1, ); $set2 = array ('b' => 1, 'c' => 1, ); $union =

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: static char daytab[2][13] = { {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31} }; into using pointers to an array of 13 ints like static char (*daytab)[13] = { {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31} }; But compiler prints warning: excess elements in scalar initializer . Googling did not help and even K&R writes when passing the array to a function, myFunction(int daytab[2][13]) {...} is the same as myFunction(int (*daytab

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I need to run a MySQL query where the order is determined by an array value. My array is variable but the values in the array correspond to a field in my DB table called 'ID' so I want the result to be returned in the ID order 9, 1, 4. Array ( [ 0 ] => 9 [ 1 ] => 1 [ 2 ] => 4 ) Is this possible in MySQL or would it be possible to sort the MySQL $result using the array after? You can assume the only values being returned are those in the array. 回答1: ORDER BY field ( id , 9 , 1 , 4 ); http://dev.mysql.com/doc/refman/5.5/en/string

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I need to insert a 1D array into the hashset. But I got error while compiling. #include #include #include using namespace std; int hash_comp(const int* state1,const int* state2) { int result = 0; for (i = 0; i ,eqArray> closelist; int main(int argc, char** argv) { const int sn[16] = {1,2,3,4,5,6,0,8,9,10,11,12,13,14,7,15}; closelist.insert(sn); return 0; } /usr/include/c++/4.2.1/ext/hashtable.h: In member function 'size_t __gnu_cxx::hashtable ::_M_bkt_num_key(const _Key&, size_t) const [with _Val = int*, _Key = int*, _HashFcn = __gnu_cxx:

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I know how to put an array in order, but in this case I just want to see if it is in order. An array of strings would be the easiest, I imagine, and answers on that front are appreciated, but an answer that includes the ability to check for order based on some arbitrary parameter is optimal. Here's an example dataset. The name of: [[ "a" , 3 ],[ "b" , 53 ],[ "c" , 2 ]] Where the elements are themselves arrays containing several elements, the first of which is a string. I want to see if the elements are in alphabetical order based

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This question already has an answer here: Why is function(char * array[]) a valid function definition but not (char (*array)[] in C? 4 answers The following function declaration is accepted by gcc, but not accepted by g++. void do_something(char (*)[]); The error given by g++ is: error: parameter '<anonymous>' includes pointer to array of unknown bound 'char []' I believe that in C, the parameter is converted to char** which is why gcc accepts it fine. Can I make g++ accept this function somehow? See example: http://ideone.com/yqvqdB :)

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: My data is stored in an array. For each array item, there should be a text input in the form. When the user types into one of the text inputs, the array should be updated with the new values. <div class = "form-group" v-for = "synonym in row.synonyms" > <input type = "text" class = "form-control" v-model = "synonym" /> </div> Here's a fiddle: https://jsfiddle.net/eywraw8t/122210/ The idea is when you type into one of the textboxes, the array value (shown below in that fiddle) should also update, but it doesn't. 回答1: Upon inspecting

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I would like to generate an array bounded by a lower and upper value with n elements similar to: def my_lin(lb, ub, steps): dx = (ub-lb) / (steps-1) return [lb + i*dx for i in range(steps)] my_lin(0,10,11) But I would like to have more values closer to the lower value. Some kind of harmonic spacing. I do not want to have a logarithmic spacing. I guess it is rather simple but I cannot figure it out. Any help is highly appreciated. EDIT: I came up with following quick solution: def harm_series(lb,n): return [float(lb)/float(i) for i in range(1

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm writing a python function to append data to text file, as shown in the following, The problem is the variable, var , could be a 1D numpy array, a 1D list, or just a float number, I know how to convert numpy.array / list / float to string separately (meaning given the type), but is there a method to convert var to string without knowing its type? def append_txt(filename, var): my_str = _____ # convert var to string with open(filename,'a') as f: f.write(my_str + '\n') Edit 1: Thanks for the comments, sorry maybe my question was not clear