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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
While executing an INSERT statement with many rows, I want to skip duplicate entries that would otherwise cause failure. After some research, my options appear to be the use of either:
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Which equals operator (== vs ===) should be used in JavaScript comparisons?
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13 revs, 8 users 32%Kalpesh Rajai
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mongoose vs mongodb (nodejs modules/extensions), which better? and why?
...te?) or simply not add one.
Models are case sensitive - Myself and other devs I work with have had issues where the case of the collection name that the model is defined with can cause it to not save anything, w/o error. We have found that using all lowercase names works best. E.g. instead of doing ...
Stack vs heap allocation of structs in Go, and how they relate to garbage collection
...24 (s.go:24) MOVQ $1000000,CX
0025 (s.go:24) REP ,
0026 (s.go:24) MOVSQ ,
0027 (s.go:24) MOVQ $0,.noname+8000000(FP)
0028 (s.go:24) MOVQ $0,.noname+8000008(FP)
0029 (s.go:24) RET ,
Still no call to runtime.new, and yes it really works to return an 8MB object by value. It works,...
Java 8 Streams: multiple filters vs. complex condition
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ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()
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When should I use Inline vs. External Javascript?
I would like to know when I should include external scripts or write them inline with the html code, in terms of performance and ease of maintenance.
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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
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getResourceAsStream() vs FileInputStream
I was trying to load a file in a webapp, and I was getting a FileNotFound exception when I used FileInputStream . However, using the same path, I was able to load the file when I did getResourceAsStream() .
What is the difference between the two methods, and why does one work while the other do...
how does multiplication differ for NumPy Matrix vs Array classes?
The numpy docs recommend using array instead of matrix for working with matrices. However, unlike octave (which I was using till recently), * doesn't perform matrix multiplication, you need to use the function matrixmultipy(). I feel this makes the code very unreadable.
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