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linux 通过bind下搭建DNS Server - 更多技术 - 清泛网 - 专注C/C++及内核技术
...务器。其实本人对理论这块了解甚少，所以重在实用。
1.理论普及
DNS服务器分为:
master（主DNS服务器）：拥有区域数据的文件，并对整个区域数据进行管理。
slave(从服务器或叫辅助服务器）：拥有主DNS服力器的区域文件的...
Where to find extensions installed folder for Google Chrome on Mac?
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218
The default locations of Chrome's profile directory are defined at http://www.chromium.org/user...
Get most recent file in a directory on Linux
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21 Answers
21
Active
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Best way to find if an item is in a JavaScript array? [duplicate]
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As of ECMAScript 2016 you can use includes()
arr.includes(obj);
If you want to support IE or other older browsers:
function include(arr,obj) {
return (arr.indexOf(obj) != -1);
}
EDIT:
This will not work on IE6, 7 or 8 though. The bes...
How to find if an array contains a specific string in JavaScript/jQuery? [duplicate]
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981
You really don't need jQuery for this.
var myarr = ["I", "like", "turtles"];
var arraycontainst...
Where could I buy a valid SSL certificate? [closed]
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137
The value of the certificate comes mostly from the trust of the internet users in the issuer o...
How to determine device screen size category (small, normal, large, xlarge) using code?
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12 Answers
12
Active
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Which Python memory profiler is recommended? [closed]
...t(h.heap())
This gives you some output like this:
Partition of a set of 132527 objects. Total size = 8301532 bytes.
Index Count % Size % Cumulative % Kind (class / dict of class)
0 35144 27 2140412 26 2140412 26 str
1 38397 29 1309020 16 3449432 42 tuple
2 530 0 739...
What is the purpose of the “role” attribute in HTML?
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1033
Most of the roles you see were defined as part of ARIA 1.0, and then later incorporated into ...
Scatterplot with too many points
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145
One way to deal with this is with alpha blending, which makes each point slightly transparent....