首页 \ 问答 \ Redis如何在内部将String表示为位？(How Redis represents String as bits internally?)

Redis如何在内部将String表示为位？(How Redis represents String as bits internally?)

 我正在尝试理解字符串的位表示（最具体的是在Redis中）  
 我试过这个：  
redis> SET mykey3 hello
OK
redis> SETBIT mykey3 7 0
(integer) 0
redis> SETBIT mykey3 7 1
(integer) 0
redis> GET mykey3
"iello"
redis> SET mykey4 5
OK
redis> SETBIT mykey4 7 0
(integer) 1
redis> GET mykey4
"4"
 
 那么在这种情况下，“你好”和“5”的位代表是什么？  
 
  另外，其他Redis类型，List，Set，Sorted Set如何表示为二进制位？ 位操作可以为它工作吗？ 或者情况并非如此？  
  从什么似乎一切都存储为二进制安全字符串？ 如果是这样，List，Set，Sorted Set如何表示为安全字符串？  

I'm trying to understand the bit representation of a String (most specifically in Redis) 
I tried this: 
redis> SET mykey3 hello
OK
redis> SETBIT mykey3 7 0
(integer) 0
redis> SETBIT mykey3 7 1
(integer) 0
redis> GET mykey3
"iello"
redis> SET mykey4 5
OK
redis> SETBIT mykey4 7 0
(integer) 1
redis> GET mykey4
"4"
 
So what is the bit representation of "hello" and "5" in this case?  
 
 Also how the other Redis types, List, Set, Sorted Set are represented as binary bit? Such that bit operations can work for it? Or this is not the case? 
 From what is seems everything is stored as binary-safe String? If so, how does a List, Set, Sorted Set are represented as safe String? 

原文：https://stackoverflow.com/questions/16133448

更新时间：2023-10-21 09:10

最满意答案

 一种可能的解决方案是在面板上添加两个底部工具栏。 像这样：  
dockedItems: [{
    xtype: 'toolbar',
    dock: 'bottom',
    border: false,
    style: {
        background: 'white'
    },
    items: [{
        text: 'Add to BoM',
        cls: 'add-to-bom-button'
    }, {
        text: 'Cancel',
        cls: 'cancel-button'
    }]
}, {
    xtype: 'toolbar',
    dock: 'bottom',
    border: false,
    style: {
        background: 'white'
    },
    items: [costContainer]
}]
 
 其中costContainer是  
var costContainer = Ext.create('Ext.container.Container', {
border: false,
layout: 'vbox',
items: [{
    xtype: 'label',
    html: 'Total Cost',
    cls: 'total-cost-label'
}, {
    xtype: 'label',
    html: '$ 66,000',
    cls: 'price-label'
}]
});
 
 我认为这个例子看起来像你在找什么，只需修复css。 http://jsfiddle.net/alexrom7/LHK39/3/ 

One possible solution would be adding two bottom toolbars to the panel. Just like this: 
dockedItems: [{
    xtype: 'toolbar',
    dock: 'bottom',
    border: false,
    style: {
        background: 'white'
    },
    items: [{
        text: 'Add to BoM',
        cls: 'add-to-bom-button'
    }, {
        text: 'Cancel',
        cls: 'cancel-button'
    }]
}, {
    xtype: 'toolbar',
    dock: 'bottom',
    border: false,
    style: {
        background: 'white'
    },
    items: [costContainer]
}]
 
where costContainer is  
var costContainer = Ext.create('Ext.container.Container', {
border: false,
layout: 'vbox',
items: [{
    xtype: 'label',
    html: 'Total Cost',
    cls: 'total-cost-label'
}, {
    xtype: 'label',
    html: '$ 66,000',
    cls: 'price-label'
}]
});
 
I think this example looks like what you are looking for, just have to fix the css. http://jsfiddle.net/alexrom7/LHK39/3/

Redis如何在内部将String表示为位？(How Redis represents String as bits internally?)

最满意答案

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