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1 Protobuf/xml/json ComparisonCompare the data storage format from the point of viewIf you want to store a key-value pair:{price:150}1.1 Protobuf's representationMessage Test {Optional Int32 price = 1;}Physical storage of PROTOBUF: 08 96 01, 3 bytes.stored in Key-value, the first byte is key, it is Field_number So field number is 1,wire type is 0, that is varint, with this wire type can be used to parse 96 01.96 01 = 1001 0110 0000 0001i.e. 001 0110 0
First, the PrimerThere are a lot of JSON-formatted plugins in the Chrome tool that can make the clutter of JSON content orderly, so let's look at the effect first:Under normal circumstances:After formatting:It's a lot more regular!Second, tool sharing + comparison1.JSON Formatterhttps://chrome.google.com/webstore/detail/json
Js processes common operations such as insert, modify, delete, and string comparison in json format. The following are five examples, interested friends can learn about common operations such as js processing of json format insertion, modification, deletion, and string comparison.
Demo 1:
Insert or delete data in
Article directory:JavaScript Objects and PHP arrays
PHP array parsed into JSON format string$arr=array( ' file ' == Array (' Open ', ' close '), ' help ' = =array(' About the procedure '); echo json_encode ($arr);Output {"\u6587\u4ef6": ["\u6253\u5f00", "\u5173\u95ed"], "\u5e2e\u52a9": ["\u5173\u4e8e\u672c\u7a0b\u5e8f"]}The {} In JS represents an object.JS [] represents an array.= = corresponds to:There are several ways to traverse
When using mc, we will consider the data storage format. The PHP function allows us to directly set an array to MC. After obtaining it, we can also use it as an array, which is really simple, however, after comparison with the JSON format, we found that the simple cost is a waste of more space. Below is a small test program:
$ Host = "10.10.10.10 ";$ Port = "11211 ";
$ Uid = "103630 ";$ P1 = array ("ET" =>
Here to introduce you to the AJAX analysis of JSON two methods of comparison, very practical, this article for learning notes, is a novice article, welcome advice!
eval (); This method does not recommend
Json.parse (); Recommended methods
The difference of one or two methods
We first initialize an object in JSON format:
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var json
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