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: My ZF2 application seems to be extremely slow when more than 3 users are using it at the same time. I profile my code with xdebug and webgrind and non of my functions seems to be slow so it has to be an optimalisation issue within the zf2 it's self. For cache I make use of the EdpSuperluminal module by EvanDotPro, this seems to increase the performance of the application. We make use of nginx reverse proxy but make no sense as well. I need some good advices to increase the response for high traffic. I speak about 30+ connected user at the

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: For SciPy sparse matrix, one can use todense() or toarray() to transform to NumPy matrix or array. What are the functions to do the inverse? I searched, but got no idea what keywords should be the right hit. 回答1: You can pass a numpy array or matrix as an argument when initializing a sparse matrix. For a CSR matrix, for example, you can do the following. >>> import numpy as np >>> from scipy import sparse >>> A = np.array([[1,2,0],[0,0,3],[1,0,4]]) >>> B = np.matrix([[1,2,0],[0,0,3],[1,0,4]]) >>> A array([[1, 2, 0], [0, 0, 3], [1, 0, 4]]) >>

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: How do I print the array element of a Bash array on separate lines? This one works, but surely there is a better way: $ my_array=(one two three) $ for i in ${my_array[@]}; do echo $i; done one two three Tried this one but it did not work: $ IFS=$'\n' echo ${my_array[*]} one two three 回答1: Try doing this : $ printf '%s\n' "${my_array[@]}" The difference between $@ and $* : Unquoted, the results are unspecified. In Bash, both expand to separate args and then wordsplit and globbed. Quoted, "$@" expands each element as a separate argument, while

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 have an array U of arrays D that vary in length. I need to be able to return all permutations of array indices that would select a different permutation consisting of 1 element from each set. I also require that this alorithm gets represented as an object that only remembers the last permutation, and returns the next permutation with a get_next method. For instance, U = [array_of_size_n1, array_of_size_n2, array_of_size_n3] There would be n1*n2*n3 permutations, each 3 elements long. Edit: the number of sets also varies. 回答1: If you're

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: One of my colleagues has recently said that the above statement is not type safe and I should use something else as you need as much type safe structures as possible to reduce the amount of possible bugs. Whilst I agree on being type safe, I'm a little confused as this is the type of code in question (only the contents and length of data[] is modified) unsigned char data[] = {1,2,3,4,5}; int data_len = sizeof(data) / sizeof(data[0]); Where is the part that is not type safe? Needless to say, other than the comment, the colleague will not

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 have an [] of integers 1<=N<=100 , How can i get permutations of this array? -> Array may contain duplicates, so resulting set of permutations can be duplicate, so need to get all non-duplicate permutations. I've found lot of snippets which would convert the int[] to string and perform permutations and printout, but as i hv here is integers of range 1<=N<=100, so converting them into string would spoil integer. I can get all permutations with duplicates including, for final set of permutations where duplicates are removed have to

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: Returning an array (Warning: Function returns address of local variable) ? interface int* decimalConversion(int iX); implementation int* decimalConversion(int iX){ int iMult[10] = {0,0,0,0,0,0,0}; ... return iMult; // 回答1: You should allocate space for the array, you're returning the address of an array that was created on the stack (hence local variable warning) if you're using C in that function use malloc(my_arr_size) if not use obj-c's alloc. Example: int *my_arr = calloc(10, sizeof(int)); //make sure we get zeroed memory //fill 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: ( EDIT : This is following on from Are objects reference counted in Windows-targeted Delphi applications, and if so, what is its purpose? and Dynamic arrays and memory management in Delphi ). I have two classes ( TGenericHoldingSummary , TGenericHoldingResultSet ) and one record ( TGenericHoldingResult ). TGenericHoldingSummary contains a single TGenericHoldingResultSet , which is set to nil and lazy-loaded from the database if and when required. The TGenericHoldingResultSet contains a dynamic array of TGenericHoldingResult records. In the

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 am working on cakephp project. I have removed index.php from URL using .htaccess file and now I want to remove view name from URL & add some other two varying parameter. Suppose I choose country & city then these two parameter should appear in URL on selecting them. The problem I am facing is as cakephp takes www.example.com/Controllername/viewname But my requirement is like this www.example.com/Controllername/param1/param2 If I pass this way It looks for param1 as controller and param2 as view. Initially should be like: www.example.com

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 have a numpy array that looks like this: [[41.743617 -87.626839] [41.936943 -87.669838] [41.962665 -87.65571899999999]] I want to round the numbers in the array to two decimal places, or three. I tried using numpy.around and numpy.round, but both of them give me the following error: File "/Library/Python/2.7/site-packages/numpy-1.8.0.dev_3084618_20130514-py2.7-macosx-10.8-intel.egg/numpy/core/fromnumeric.py", line 2452, in round_ return round(decimals, out) AttributeError: rint i used numpy.around(x, decimals = 2) and numpy.round(x