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Java heap terminology: young, old and permanent generations?
I'm trying to understand What the concepts of young , old and permanent generations are in the Java heap terminology, and more specifically the interactions between the three generations.
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搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
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mkdir -p /data/mongodbtest/replset/data
#进入mongodb文件夹
cd /data/mongodbtest
3、下载mongodb的安装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.8.tgz
注意linux生产环境不能安装32位的mongodb，因为32位受限于操作系统最...
Lost my schema.rb! Can it be regenerated?
Due to some deployment issues I stopped tracking schema.rb in git. Somehow I have stuffed this up and somewhere along the way my schema.rb file has disappeared.
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Editing dictionary values in a foreach loop
I am trying to build a pie chart from a dictionary. Before I display the pie chart, I want to tidy up the data. I'm removing any pie slices that would be less than 5% of the pie and putting them in a "Other" pie slice. However I'm getting a Collection was modified; enumeration operation may not exe...
In C, do braces act as a stack frame?
If I create a variable within a new set of curly braces, is that variable popped off the stack on the closing brace, or does it hang out until the end of the function? For example:
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Checking if array is multidimensional or not?
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Javascript - sort array based on another array
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Aggregate / summarize multiple variables per group (e.g. sum, mean)
...om a data frame, is there a easy way to aggregate ( sum , mean , max et c) multiple variables simultaneously?
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Is there a way to define a min and max value for EditText in Android?
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Split comma-separated strings in a column into separate rows
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