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mongoDB/mongoose: unique if not null
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"Note: if the index already exists on the db, it will not be replaced." - mongoosejs.com/docs/2.7.x/docs/schematypes.html
– damphat
Oct 21 '13 at 10:15
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How to validate phone numbers using regex
...he first comment on this answer about the "Complicator's Gloves" is a good read... sometimes the answer to a problem is to approach it differently.
– scunliffe
Mar 30 '12 at 20:19
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How to create a density plot in matplotlib?
..., when I Google "how to create a kernel density plot using python", this thread still shows up at the top!
Today, a much easier way to do this is to use seaborn, a package that provides many convenient plotting functions and good style management.
import numpy as np
import seaborn as sns
data = [...
Adding up BigDecimals using Streams
...would advice you to also actually use the total() method, which you have already defined, then it even becomes easier:
List<Invoice> invoiceList = new ArrayList<>();
//populate
BigDecimal result = invoiceList.stream()
.map(Invoice::total)
.reduce(BigDecimal.ZERO, BigDeci...
Custom attributes in styles.xml
..., "customFont");
...which was resulting in my custom attribute not being read in for my custom view.
The fix was to use obtainStyledAttributes in my custom view:
TypedArray styleAttrs = context.obtainStyledAttributes(attrs, R.styleable.MyTextViewStyleable);
String fontName = styleAttrs.getStri...
What are the dangers when creating a thread with a stack size of 50x the default?
...plore that may help reduce resource consumption was increasing my worker threads' stack size so I can move most of the data ( float[] s) that I'll be accesing onto the stack (using stackalloc ).
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What is Full Text Search vs LIKE
I just read a post mentioning "full text search" in SQL.
6 Answers
6
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visual c++: #include files from other projects in the same solution
... because you include the directory in the Additional Include Directories already, so Visual Studio will know where to look for it.
If you don't want to add every header file location in the project settings, you could just include a directory up to a point, and then #include relative to that point:...
Performant Entity Serialization: BSON vs MessagePack (vs JSON)
...tdout.write [1,2,3].to_msgpack
$stdout.write [1,2,3].to_msgpack
# read objects from stdin using streaming deserializer
unpacker = MessagePack::Unpacker.new($stdin)
# use iterator
unpacker.each {|obj|
p obj
}
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Good examples of MVVM Template
...-validation-in-3-5.aspx
Again, most ORM solutions generate classes that already implement IDataErrorInfo and typically provide a mechanism to make it easy to add custom validation rules.
Most of the time you can take an object(model) created by some ORM and wrap it in a ViewModel that holds it and...