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How to convert a data frame column to numeric type?
...to demonstrate certain "conversion anomaly":
# create dummy data.frame
d <- data.frame(char = letters[1:5],
fake_char = as.character(1:5),
fac = factor(1:5),
char_fac = factor(letters[1:5]),
num = 1:5, stringsAsFactors = FALSE)
...
How do I create a simple 'Hello World' module in Magento?
...and then the MVC controller.
Fourth, the Magento application itself is built using the same module system you'll be using, so poking around the core code is a useful learning tactic. Also, a lot of what you'll be doing with Magento is overriding existing classes. What I'm covering here is creating ...
How do I print the type of a variable in Rust?
... case of floating-point variables, if you don't constrain it, it will default to f64¹. (An unqualified integer literal will default to i32.)
See also:
What is the {integer} or {float} in a compiler error message?
¹ There may still be ways of baffling the compiler so that it can’t decide ...
How to change the Text color of Menu item in Android?
...
One simple line in your theme :)
<item name="android:actionMenuTextColor">@color/your_color</item>
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Change “on” color of a Switch
...mple styling to change the color of your components.
values/themes.xml:
<style name="Theme.MyTheme" parent="Theme.AppCompat.Light">
<!-- colorPrimary is used for the default action bar background -->
<item name="colorPrimary">@color/my_awesome_color</item>
<...
How do I use WPF bindings with RelativeSource?
... property on the templated parent (so you can do 2 way bindings in a ControlTemplate)
{Binding Path=PathToProperty, RelativeSource={RelativeSource TemplatedParent}}
or, shorter (this only works for OneWay bindings):
{TemplateBinding Path=PathToProperty}
...
What does template mean?
...ate algorithms which evaluate at compile time (from Wikipedia):
template <int N>
struct Factorial
{
enum { value = N * Factorial<N - 1>::value };
};
template <>
struct Factorial<0>
{
enum { value = 1 };
};
// Factorial<4>::value == 24
// Factorial<0>...
Android ListView Divider
... refers to the other statements in this thread complaining about using px altogether. This may or may not be the solution to his problem and it's up to him to declare whether or not it is
– Joe Plante
Oct 24 '13 at 14:29
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Can HTML be embedded inside PHP “if” statement?
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<?php if($condition) : ?>
<a href="http://yahoo.com">This will only display if $condition is true</a>
<?php endif; ?>
By request, here's elseif and else (which you can also find in the docs)
<...
How to change progress bar's progress color in Android
...lication, and I want to change its progress color (which is Yellow by default). How can I do it using code (not XML)?
36 ...