array

Get all months name from year in moment.js

匿名 (未验证) 提交于 2019-12-03 02:06:01
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 want to get all months name from year in moment.js if the year is 2011 , then i want to all months name in momentjs i have tried this below code, but it's not working for me. var xxx = moment().months(2011); Showing result is also i have tried xxx.months() , but it's return result is 7 but i want jan,feb,mar,......dec . hmm What can i do? 回答1: There happens to be a function for that: moment.monthsShort() // ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"] Or the same using manual formatting: Array.apply(0, Array(12

How to get a sub array of array in Java, without copying data?

匿名 (未验证) 提交于 2019-12-03 02:06:01
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 some library of classes, working with my data, which is being read into buffer. Is it possible somehow to avoid copying arrays again and again, passing parts of data deeper and deeper into processing methods? Well, it sounds strange, but in my particular case, there's a special writer, which divides data into blocks and writes them individually into different locations, so it just performs System.arraycopy, gets what it needs and calls underlying writer, with that new sub array. And this happens many times. What is the best approach

C subscripted value is neither array nor pointer nor vector when assigning an array element value

匿名 (未验证) 提交于 2019-12-03 02:06:01
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: Sorry for asking the already answered question, I am a newbie to C and don't understand the solutions. Here is my function int rotateArr(int *arr) { int D[4][4]; int i = 0, n =0; for(i; i It throws an error main.c|23|error: subscripted value is neither array nor pointer nor vector| on line D[i][n] = arr[n][M - i + 1]; What's wrong? I am just setting the value of an array element to another array element. The arr passed is declared as int S[4][4] = { { 1, 4, 10, 3 }, { 0, 6, 3, 8 }, { 7, 10 ,8, 5 }, { 9, 5, 11, 2} }; 回答1: C lets you use the

An issue with AVSpeechSynthesizer, Any workarounds?

匿名 (未验证) 提交于 2019-12-03 02:06:01
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 using AVSpeechSynthesizer to play text. I have an array of utterances to play. NSMutableArray *utterances = [[NSMutableArray alloc] init]; for (NSString *text in textArray) { AVSpeechUtterance *welcome = [[AVSpeechUtterance alloc] initWithString:text]; welcome.rate = 0.25; welcome.voice = voice; welcome.pitchMultiplier = 1.2; welcome.postUtteranceDelay = 0.25; [utterances addObject:welcome]; } lastUtterance = [utterances lastObject]; for (AVSpeechUtterance *utterance in utterances) { [speech speakUtterance:utterance]; } I have a cancel

Storing R.drawable IDs in XML array

匿名 (未验证) 提交于 2019-12-03 02:06:01
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 store drawable resources' ID in the form of R.drawable.* inside an array using an XML values file, and then retrieve the array in my activity. Any ideas of how to achieve this? 回答1: You use a typed array in arrays.xml file within your /res folder that looks like this: @drawable/car_01 @drawable/balloon_random_02 @drawable/dog_03 Then in your activity, access them like so: TypedArray imgs = getResources().obtainTypedArray(R.array.random_imgs); // get resource ID by index imgs.getResourceId(i, -1) // or set you ImageView's

C Struct array member without specific length

匿名 (未验证) 提交于 2019-12-03 02:05:01
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 encounter such code: struct test { uint32 num_fields; char array_field []; }; How to understand array_field? Is this a gcc extension for C language? 回答1: It's a C99 feature, called flexible array member which is typically used to create a variable length array. It can only be specified as the last member of a struct without specifying the size (as in array_field []; ). For example, you can do the following and the member arr will have 5 bytes allocated for it: struct flexi_example { int data; char arr[]; }; struct flexi_example *obj;

Plot GDAL raster using matplotlib Basemap

匿名 (未验证) 提交于 2019-12-03 02:05:01
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 plot a raster tiff ( download -723Kb) using matplotlib Basemap. My raster's projection coordinates is in meter: In [2]: path = r'albers_5km.tif' raster = gdal.Open(path, gdal.GA_ReadOnly) array = raster.GetRasterBand(20).ReadAsArray() print ('Raster Projection:\n', raster.GetProjection()) print ('Raster GeoTransform:\n', raster.GetGeoTransform()) Out [2]: Raster Projection: PROJCS["unnamed",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM[

Parsing JSON in Excel VBA

匿名 (未验证) 提交于 2019-12-03 02:05:01
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 the same issue as in Excel VBA: Parsed JSON Object Loop but cannot find any solution. My JSON has nested objects so suggested solution like VBJSON and vba-json do not work for me. I also fixed one of them to work properly but the result was a call stack overflow because of to many recursion of the doProcess function. The best solution appears to be the jsonDecode function seen in the original post. It is very fast and highly effectively effective; my object structure is all there in a generic VBA Object of type JScriptTypeInfo. The

What does .shape[] do in “for i in range(Y.shape[0])”?

匿名 (未验证) 提交于 2019-12-03 02:05:01
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 trying to break down a program line by line. Y is a matrix of data but I can't find any concrete data on what .shape[0] does exactly. for i in range(Y.shape[0]): if Y[i] == -1: This program uses numpy, scipy, matplotlib.pyplot, and cvxopt. 回答1: The shape attribute for numpy arrays returns the dimensions of the array. If Y has n rows and m columns, then Y.shape is (n,m) . So Y.shape[0] is n . In [46]: Y = np.arange(12).reshape(3,4) In [47]: Y Out[47]: array([[ 0, 1, 2, 3], [ 4, 5, 6, 7], [ 8, 9, 10, 11]]) In [48]: Y.shape Out[48]: (3, 4)

Arrays.asList() vs Collections.singletonList()

匿名 (未验证) 提交于 2019-12-03 02:03:01
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: Is there an advantage (or much of a difference) to using Arrays.asList(something) over Collections.singletonList(something) to make a list containing one item? The latter makes the returned list immutable as well. 回答1: Collections.singletonList(something) is immutable whereas Arrays.asList(something) is a fixed size List representation of an Array where the List and Array gets joined in the heap. Arrays.asList(something) allows non-structural changes made to it, which gets reflected to both the List and the conjoined array. It throws