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java: Class.isInstance vs Class.isAssignableFrom
...rns true when the parameter obj is non-null and can be cast to MyClass without raising a ClassCastException. In other words, obj is an instance of MyClass or its subclasses.
MyClass.class.isAssignableFrom(Other.class) will return true if MyClass is the same as, or a superclass or superinterface of...
How to remove newlines from beginning and end of a string?
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The question is about newlines. This removes more than just newlines
– mmm
Nov 7 '15 at 13:39
add a comment
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numpy: most efficient frequency counts for unique values in an array
...egative ints, and it will be very space inefficient if the ints are spaced out.
– Erik
Jun 9 '14 at 6:46
With numpy ve...
Block comments in html.erb templates in rails
How do you comment out html mixed with ruby code?
16 Answers
16
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How do I create a MongoDB dump of my database?
...he backup on the fly:
mongodump --db somedb --collection somecollection --out - | gzip > collectiondump.gz
or with a date in the file name:
mongodump --db somedb --collection somecollection --out - | gzip > dump_`date "+%Y-%m-%d"`.gz
Update:
Backup all collections of a database in a date...
What is RSS and VSZ in Linux memory management
...to that process and is in RAM. It does not include memory that is swapped out. It does include memory from shared libraries as long as the pages from those libraries are actually in memory. It does include all stack and heap memory.
VSZ is the Virtual Memory Size. It includes all memory that th...
Where is array's length property defined?
... context for its own existence. You cannot have classes for everything without eventually hitting rock bottom where you code it in C++. How exactly would you build an array in java? If you can't use a List because that uses arrays in their implementations.
– Alexander Bird
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How to change the order of DataFrame columns?
...e columns, rearranged as needed.
This is what you have now:
In [6]: df
Out[6]:
0 1 2 3 4 mean
0 0.445598 0.173835 0.343415 0.682252 0.582616 0.445543
1 0.881592 0.696942 0.702232 0.696724 0.373551 0.670208
2 0.662527 0.955193 0.131016...
What is InputStream & Output Stream? Why and when do we use them?
Someone explain to me what InputStream and OutputStream are?
8 Answers
8
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Git: How to return from 'detached HEAD' state
If one would checkout a branch:
4 Answers
4
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