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How to get the start time of a long-running Linux process?
... PID CMD STARTED
1 Tue Jun 7 01:29:38 2016 /sbin/init
2 Tue Jun 7 01:29:38 2016 [kthreadd]
3 Tue Jun 7 01:29:38 2016 [ksoftirqd/0]
5 Tue Jun 7 01:29:38 2016 [kworker/0:0H]
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When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
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103
Since jQuery 1.8 .then behaves the same as .pipe:
Deprecation Notice: As of jQuery 1.8, the de...
HashSet versus Dictionary w.r.t searching time to find if an item exists
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HashSet vs List vs Dictionary performance test, taken from here.
Add 1000000 objects (without checking duplicates)
Contains check for half the objects of a collection of 10000
Remove half the objects of a collection of 10000
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MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
...，集合中数据如下：
> db.students.find()
{ "_id" : ObjectId("5031143350f2481577ea81e5"), "classid" : 1, "age" : 20, "name" : "kobe" }
{ "_id" : ObjectId("5031144a50f2481577ea81e6"), "classid" : 1, "age" : 23, "name" : "nash" }
{ "_id" : ObjectId("5031145a50f2481577ea81e7"), "classid" :...
Can you do greater than comparison on a date in a Rails 3 search?
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answered Nov 19 '10 at 11:43
Simone CarlettiSimone Carletti
160k3939 gold badges336336 silver badges353353 bronze badges
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MongoDB: update every document on one field
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+50
Regardless of the version, for your example, the <update> is:
{ $set: { lastLookedAt: Date.now() / 1000 } }
However, depe...
Execution failed app:processDebugResources Android Studio
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108
For me it helped to change the version of buildTools to:
buildToolsVersion "21.0.1"
You will...
How do I trim a file extension from a String in Java?
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290
This is the sort of code that we shouldn't be doing ourselves. Use libraries for the mundane stu...
Android AsyncTask threads limits?
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207
All AsyncTasks are controlled internally by a shared (static) ThreadPoolExecutor and a LinkedBl...