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搭建高可用mongodb集群（四）—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
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#使用admin数据库
use admin
#定义副本集配置
config = { _id:"shard1", members:[
{_id:0,host:"192.168.0.136:22001"},
{_id:1,host:"192.168.0.137:22001"},
{_id:2,host:"192.168.0.138:22001",arbiterOnly:true}
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Android getting value from selected radiobutton
...
Tested and working. Check this
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android....
Fragment is not being replaced but put on top of the previous one
...ically using FragmentTransaction.
FragmentTransaction.replace expects the id of the container that contains the fragment and not the id of the fragment as the first parameter. So you should pass the first argument as the id of the container that you added the first fragment to.
You can refer to ...
Delete a single record from Entity Framework?
...r table in Entity Framework named employ with a single key column named ID .
15 Answers
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Reference: Comparing PHP's print and echo
...an only handle one. For this answer we need to turn to the parser, specifically the file zend_language_parser.y. You will note that echo has the flexibility built in so that it may print one or multiple expressions (see here). whereas print is constrained to printing only one expression (see there...
Django database query: How to get object by id?
Django automatically creates an id field as primary key.
6 Answers
6
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How may I reference the script tag that loaded the currently-executing script?
...s not work with modules <script type="module">
2. Select script by id
Giving the script an id attribute will let you easily select it by id from within using document.getElementById().
<script id="myscript">
var me = document.getElementById('myscript');
</script>
Benefits
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Suppress deprecated import warning in Java
... This combination of "@SuppressWarnings" and "@Deprecated" also works for calling deprecated methods inside your own method.
– Swav
Jul 30 '15 at 17:26
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Which Boost features overlap with C++11?
...re polynomials
Hermite polynomials
Bessel (J / Y / I / K) functions (Y is called Neumann function in C++)
spherical Bessel (j / y) functions
(incomplete / complete) elliptic integrals of (first / second / third kind)
Riemann zeta function
exponential integral Ei
Variant → std::variant (P0088R2)
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How to access parent scope from within a custom directive *with own scope* in AngularJS?
... above, etc. I'm totally willing to bend over backwards, but I want to avoid something totally hacky or unmaintainable. For example, I know I could do it right now by taking the $scope from the preLink parameters and iterating over it's $sibling scopes to find the conceptual "parent".
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