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Java8使用Stream对Map排序

由 心不动则不痛 提交于 2021-02-12 02:46:02
HashMap<String, Long> map = new HashMap<>(); map.put("a", 10L); map.put("b", 20L); map.put("c", 15L); map.put("d", 23L); System.out.println("----Before Sort-----"); map.forEach((k, v) -> { System.out.println(k + " = " + v); }); Map<String, Long> finalMap = new LinkedHashMap<>(); map.entrySet().stream() .sorted(Map.Entry.<String, Long> comparingByValue().reversed()) .forEachOrdered(e -> finalMap.put(e.getKey(), e.getValue())); System.out.println("----After Sort-----"); finalMap.forEach((k, v) -> { System.out.println(k + " = " + v); }); 来源： oschina 链接： https://my.oschina.net/u/575679/blog

WebClient.OpenRead download data in chunks

由 佐手、 提交于 2021-02-11 17:44:47
问题 I am trying to download data using a Webclient object in chunks of 5% each. The reason is that I need to report progress for each downloaded chunk. Here is the code I wrote to do this task: private void ManageDownloadingByExtractingContentDisposition(WebClient client, Uri uri) { //Initialize the downloading stream Stream str = client.OpenRead(uri.PathAndQuery); WebHeaderCollection whc = client.ResponseHeaders; string contentDisposition = whc["Content-Disposition"]; string contentLength = whc[

Translate audio from speaker output in python with azureSDK

由 妖精的绣舞 提交于 2021-02-11 16:51:02
问题 I'm looking to make an application, who woul'd let me translate any audio going out of the speaker in live stream. This way, i will be able to translate any videoconference from any live stream app(youtube,teams,zoom,etc.). I'm not far from a solution, but not there yet. Src language would be: fr-CA or en-US Dst language would be : fr-Ca or en-US I was able to get audio stream back from speaker with a custom version of pyaudio allowing loopback with the WASAPI of windows.(https://github.com

Byte[stream.length] - out of memory exception, best way to solve?

由 流过昼夜 提交于 2021-02-11 16:42:28
问题 i am trying to read the stream of bytes from a file. However when I try to read the bytes I get a The function evaluation was disabled because of an out of memory exception Quite straightforward. However, what is the best way of getting around this problem? Is it too loop around the length at 1028 at a time? Or is there a better way? The C# I am using BinaryReader br = new BinaryReader(stream fs); // The length is around 600000000 long Length = fs.Length; // Error here bytes = new byte[Length

Byte[stream.length] - out of memory exception, best way to solve?

由 被刻印的时光 ゝ 提交于 2021-02-11 16:40:16
问题 i am trying to read the stream of bytes from a file. However when I try to read the bytes I get a The function evaluation was disabled because of an out of memory exception Quite straightforward. However, what is the best way of getting around this problem? Is it too loop around the length at 1028 at a time? Or is there a better way? The C# I am using BinaryReader br = new BinaryReader(stream fs); // The length is around 600000000 long Length = fs.Length; // Error here bytes = new byte[Length

Enrich a Kafka Stream with data from KTables

由 旧城冷巷雨未停 提交于 2021-02-11 15:01:35
问题 I currently maintain a financial application. While there are many calculations done in this financial application, one of the calculations is to determine 1) How much percentage of the total transaction amount does a new incoming transaction account for? 2) How much percentage of the total transaction amount for the given customer does the new transaction account for with respect to the same customer? For the sake of simplicity, let's assume that the transcation data will be cut off at 6 am

How to get raw jpeg data (but no metatags / proprietary markers)

由 偶尔善良 提交于 2021-02-11 13:03:09
问题 I want to get raw jpeg data - no metadata. I'm very confused looking at the jpeg "standards". How correct is my understanding of the marker "tree"? 0xFFD8 - Identifies the file as an image 0xFFE? - EXIF, JFIF, SPIFF, ICC, etc 0x???? - the length of the tag 0xFFD8 - Start of Image 0xFFE0 - should follow SOI as per spec, but often preceded by comments ??? 0x???? - Matrices, tags, random data ??? There are never other markers in-between these markers? Or these include the matrices and such?

Dart: How to pass data from one process to another via streams

由 限于喜欢 提交于 2021-02-11 08:46:05
问题 I need the ability to start two processes from dart, read the input from the first process, manipulate the output in dart and then send the data to a second process. Note: in this example I state two processes but in reality I may need to create a pipe line involving any number of processes. The two process are likely to be long running (assume minutes) and the output must be available as the processes process the data (think tail -f). To re-inforce the last point the process may output large

Dart: How to pass data from one process to another via streams

由 自闭症网瘾萝莉.ら 提交于 2021-02-11 08:45:49
问题 I need the ability to start two processes from dart, read the input from the first process, manipulate the output in dart and then send the data to a second process. Note: in this example I state two processes but in reality I may need to create a pipe line involving any number of processes. The two process are likely to be long running (assume minutes) and the output must be available as the processes process the data (think tail -f). To re-inforce the last point the process may output large

Stream reader.Read number of character

由 让人想犯罪 __ 提交于 2021-02-11 07:26:32
问题 Is there any Stream reader Class to read only number of char from string Or byte from byte[] ? forexample reading string: string chunk = streamReader.ReadChars(5); // Read next 5 chars or reading bytes byte[] bytes = streamReader.ReadBytes(5); // Read next 5 bytes Note that the return type of this method or name of the class does not matter. I just want to know if there is some thing similar to this then i can use it. I have byte[] from midi File. I want to Read this midi file in C#. But i
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