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搭建高可用mongodb集群（三）—— 深入副本集内部机制 - 大数据 & AI - 清...
...plogSize 可以通过–oplogSize设置大小，对于linux 和windows 64位，oplog size默认为剩余磁盘空间的5%。
同步也并非只能从主节点同步，假设集群中3个节点，节点1是主节点在IDC1，节点2、节点3在IDC2，初始化节点2、节点3会从节点1同...
Generate GUID in MySQL for existing Data?
...4f0fe68467769feec7 |
| Aachen | d6172223a472bdc5f25871427ba64e46 |
| Aalborg | 8d11bc300f203eb9cb7da7cb9204aa8f |
| Aba | 98aeeec8aa81a4064113764864114a99 |
| Abadan | 7aafe6bfe44b338f99021cbd24096302 |
| Abaetetuba | 9dd3...
How to insert text into the textarea at the current cursor position?
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RaabRaab
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convert_tz returns null
...marBarmar
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How should I use Outlook to send code snippets?
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Thanks, is a bit of pain if you have npp 64bit, no plugin manager, some fixes here - github.com/notepad-plus-plus/notepad-plus-plus/issues/…
– cardamom
Nov 5 '18 at 10:41
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Self-references in object literals / initializers
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64
Simply instantiate an anonymous function:
var foo = new function () {
this.a = 5;
this...
How to detect if CMD is running as Administrator/has elevated privileges?
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64
ADDENDUM: For Windows 8 this will not work; see this excellent answer instead.
Found this so...
How to randomly select rows in SQL?
... broke the random selection. Using min() and max() applied to the dbo.Tally64k table would not allow the user to select a row with a pk id > 65556.
– RIanGillis
Sep 23 '19 at 13:41
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How do I create 7-Zip archives with .NET?
... encoder.WriteCoderProperties(outStream);
Int64 fileSize;
if (eos || stdInMode)
fileSize = -1;
else
fileSize = inStream.Length;
for (int i = 0; i < 8; i++)
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Moving decimal places over in a double
...123125782702118158340454101562
12.339999999999999857891452847979962825775146484375
In short, rounding is unavoidable for sensible answers in floating point whether you are doing this explicitly or not.
Note: x / 100 and x * 0.01 are not exactly the same when it comes to rounding error. This is...