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LINQ - Left Join, Group By, and Count
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.Count() will generate COUNT(*) which will count all the rows in that group, by the way.
– Mehrdad Afshari
Mar 29 '09 at 22:47
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Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
...ion function is to introduce non-linearity into the network
in turn, this allows you to model a response variable (aka target variable, class label, or score) that varies non-linearly with its explanatory variables
non-linear means that the output cannot be reproduced from a linear combination of ...
Should I learn C before learning C++? [closed]
...es not mean you need to learn C first.
If you learn C++ you will eventually learn most of C with some differences between the languages that you will learn over time. In fact its a very hard thing to write proper C++ because intermediate C++ programmers tend to write C/C++.That is true whether ...
Setting direction for UISwipeGestureRecognizer
...ple swipe gesture recognition to my view based iPhone project. Gestures in all directions (right, down, left, up) should be recognized.
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How to add pandas data to an existing csv file?
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Thanks for the answer. This will allow me append new df on row-wise. But could you let me know how can I append the new df on column-wise?
– datanew
Nov 9 '18 at 21:30
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How to create a subdirectory for a project QtCreator?
... directory.
Qt Creator displays these in the GUI in a nested fashion, and allows you to add files to them.
e.g.
in project.pro
include(folder1/include.pri)
in folder1/include.pri
HEADERS += MyClass.h
SOURCES += MyClass.cpp
etc
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Remove multiple whitespaces
I'm getting $row['message'] from a MySQL database and I need to remove all whitespace like \n \t and so on.
15 Answer...
IEnumerable vs List - What to Use? How do they work?
... until you enumerate it? Consider this:
public IEnumerable<Animals> AllSpotted()
{
return from a in Zoo.Animals
where a.coat.HasSpots == true
select a;
}
public IEnumerable<Animals> Feline(IEnumerable<Animals> sample)
{
return from a in sample
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Is it possible to set async:false to $.getJSON call
Is it possible to set async: false when calling $.getJSON() so that the call blocks rather than being asynchronous?
7 A...
How do we use runOnUiThread in Android?
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Just wrap it as a function, then call this function from your background thread.
public void debugMsg(String msg) {
final String str = msg;
runOnUiThread(new Runnable() {
@Override
public void run() {
mInfo.setText(str);
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