compression

问题 I want to store JSON data in local storage. Sometimes data stored could be more than 5MB(max threshold allowed by browsers for each domain). Is there anyway i can compress or zip the data and store it in local storage ? How much latency it will add if compression and decompression for every JS function on large data ? I am using this json data to display on webpage..... It is like a static data which is mostly same for entire session. we provide actions like search, filter etc on this json

问题 I am currently on a hosted Virtual Server, I want to enable GZip compression for my Asp.Net 3.5 site, how do I go about starting? I have tried using 'packed' JS files, but they don't work, I am assuming it's because they are not handled correctly...? 回答1: GZIP should be handled by IIS , what version of IIS are you running? The client is responsible for asking the server for a GZiped version. The server will be looking for two things, the request is http 1.1, and a header of Accept-Encoding:

问题 Are there any lossless compression methods that can be applied to floating point time-series data, and will significantly outperform, say, writing the data as binary into a file and running it through gzip? Reduction of precision might be acceptable, but it must happen in a controlled way (i.e. I must be able to set a bound on how many digits must be kept) I am working with some large data files which are series of correlated double s, describing a function of time (i.e. the values are

问题 In honor of the Hutter Prize, what are the top algorithms (and a quick description of each) for text compression? Note: The intent of this question is to get a description of compression algorithms, not of compression programs. 回答1: The boundary-pushing compressors combine algorithms for insane results. Common algorithms include: The Burrows-Wheeler Transform and here - shuffle characters (or other bit blocks) with a predictable algorithm to increase repeated blocks which makes the source

问题 I have manually compressed my CSS using manual gzip and I'm trying to include css.gz from external source. <link rel="stylesheet" href="<c:url value="/resources/css/style.css.gz"/>" type="text/css" media="screen" /> It is simple and works well when I'm using PHP and Apache. The problem is, I'm now working with a Java EE project using spring and Apache Maven. So, how to configure maven to know about precompressed files like that? 回答1: You should create a source structure like the following: .

问题 I'm a bit confused by zlib compressing an input of a string of type char . Below I have the output from the code as posted and what I noticed was that the input string was shorter in bytes compared to the output. The uncompressed size was 8 bytes and the compressed is 12 ? Am I not seeing this correctly instead? Here's the code. #include <stdio.h> #include <string.h> #include <assert.h> #include <iostream> #include "zlib.h" void print( char *array, int length) { for(int index = 0; index <

问题 I've got a huge *.tar.gz file and I want to see the list of files contained in it without extracting the contents (preferably with mtimes per file). How can I achieve that in python? 回答1: You can use TarFile.getnames() like this: #!/usr/bin/env python3 import tarfile tarf = tarfile.open('foo.tar.gz', 'r:gz') print(tarf.getnames()) http://docs.python.org/3.3/library/tarfile.html#tarfile.TarFile.getnames And if you want mtime values you can use getmembers(). print([(member.name, member.mtime)

问题 I'm trying to Zip and send .csv files using C#. I create the files, zip them and send them using an SMTP Gmail host. It can sometimes take this email several hours to reach it's destination. For testing I am using very small files so size isn't an issue. If I try to "manually" send these zips using gmail I get the following error: "myFile.csv.zip contains an executable file. For security reasons, Gmail does not allow you to send this type of file." I think there might be a problem with my

问题 i used the wsimport tool to create a soap client which is working very well. Now I like to request a compressed response from the server because the responses can be quite big. I don't know if the server is able to send compressed content. As far as I know I have to add something like "Accept-Encoding: gzip" in the request. How and where do I do that? Thanks 回答1: If your using ksoap jar for soap request then you need to set your compress method name on your header request. To set header your

问题 i used the wsimport tool to create a soap client which is working very well. Now I like to request a compressed response from the server because the responses can be quite big. I don't know if the server is able to send compressed content. As far as I know I have to add something like "Accept-Encoding: gzip" in the request. How and where do I do that? Thanks 回答1: If your using ksoap jar for soap request then you need to set your compress method name on your header request. To set header your