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How to filter array in subdocument with MongoDB [duplicate]
...ck together:
db.test.aggregate([
{ $match: {_id: ObjectId("512e28984815cbfcb21646a7")}},
{ $unwind: '$list'},
{ $match: {'list.a': {$gt: 3}}},
{ $group: {_id: '$_id', list: {$push: '$list.a'}}}
])
outputs:
{
"result": [
{
"_id": ObjectId("512e28984815cbfcb21646a7")...
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Nabeel K
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answered Mar 27 '13 at 17:00
ingh.amingh.am
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Are complex expressions possible in ng-hide / ng-show?
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edited Dec 2 '14 at 21:31
isherwood
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Concatenate multiple result rows of one column into one, group by another column [duplicate]
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answered Apr 6 '13 at 11:44
Erwin BrandstetterErwin Brandstetter
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wget command to download a file and save as a different filename
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854
Use the -O file option.
E.g.
wget google.com
...
16:07:52 (538.47 MB/s) - `index.html' saved ...
What does the -u flag mean in git push -u origin master? [closed]
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Abhinandan Dubey
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answered Sep 18 '13 at 9:13
ShunyaShunya
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Angular.js vs Knockout.js vs Backbone.js [closed]
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edited May 25 '16 at 5:14
Meetai.com
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answered ...
Splitting string with pipe character (“|”) [duplicate]
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answered Feb 3 '14 at 10:20
devnulldevnull
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2014年腾讯代码报告—累计代码行14亿 - 创意 - 清泛网 - 专注C/C++及内核技术
2014年腾讯代码报告—累计代码行14亿腾讯Code平台在官方公众号公布了《2014年度腾讯代码报告》，截止到2014年底，腾讯公司累计代码行已达14亿，参与编码人员1.2万。从图表可以...腾讯Code平台在官方公众号公布了《2014年度腾讯...