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Fastest way to flatten / un-flatten nested JSON objects
...d"]}]} => {"a.0.b.0":"c","a.0.b.1":"d"}
[1,[2,[3,4],5],6] => {"0":1,"1.0":2,"1.1.0":3,"1.1.1":4,"1.2":5,"2":6}
Advantages:
Flattening an object is faster than the current solution.
Flattening and unflattening an object is as fast as or faster than the current solution.
Flattened objects ...
App Inventor 2 中的响应式设计 · App Inventor 2 中文网
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Responsive Design in App Inventor
version 1.0: August 15, 2015
Responsive Design in App Inventor
Specifying sizes as percentages
Fixed vs. responsive sizing
Detailed example
Special circumstances
Limitation: Drawing a...
Why use softmax as opposed to standard normalization?
...r outputs get excited. Consider [0.001, 0.002] (0.49975, 0.50025) vs [0.5, 1.0] (0.37, 0.62)
– Piotr Czapla
Jul 28 at 17:21
1
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How to ignore files/directories in TFS for avoiding them to go to central source repository?
...d add the following contents and save it:
NuGet.config:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<solution>
<add key="disableSourceControlIntegration" value="true" />
</solution>
</configuration>
Go back in your .sln's folder and c...
What is the difference between NaN and None?
...results):
In [15]: s_bad.sum()
Out[15]: 1
In [16]: s_good.sum()
Out[16]: 1.0
To answer the second question:
You should be using pd.isnull and pd.notnull to test for missing data (NaN).
share
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i...
Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?
.... However, when I install Java SE 6, I get a JVM that reports as version 11.0! Who can solve the madness?
6 Answers
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Should you choose the MONEY or DECIMAL(x,y) datatypes in SQL Server?
...meric(38,22)
declare @num2 numeric(38,22)
set @num1 = .0000006
set @num2 = 1.0
select @num1 * @num2 * 1000000
1.000000 <- Should be 0.6000000
The money types are integers
The text representations of smallmoney and decimal(10,4) may look alike, but that doesn't make them interchangeable. D...
Custom attributes in styles.xml
...he answer is to NOT specify the namespace in the style.
<?xml version="1.0" encoding="utf-8" ?>
<resources xmlns:android="http://schemas.android.com/apk/res/android">
<style name="CustomStyle">
<item name="android:layout_width">wrap_content</item>
&...
Ignore Xcode warnings when using Cocoapods
...fined method `inhibit_all_warnings!' for #<Pod::Specification for MyApp(1.0)>
– KrauseFx
Nov 3 '12 at 21:27
...
Assign width to half available screen width declaratively
...e changing it to a percentage, then see this answer.
XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas...