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How to make an Android device vibrate?
I wrote an Android application. Now, I want to make the device vibrate when a certain action occurs. How can I do this?
13 ...
Specifying and saving a figure with exact size in pixels
...
I had same issue. I used PIL Image to load the images and converted to a numpy array then patched a rectangle using matplotlib. It was a jpg image, so there was no way for me to get the dpi from PIL img.info['dpi'], so the accepted solution did not work for me. But after some tinker...
Is there a difference between “==” and “is”?
...> b == a
True
# Make a new copy of list `a` via the slice operator,
# and assign it to variable `b`
>>> b = a[:]
>>> b is a
False
>>> b == a
True
In your case, the second test only works because Python caches small integer objects, which is an implementation detail...
Is there a Java equivalent to C#'s 'yield' keyword?
...ons I know of is Aviad Ben Dov's infomancers-collections library from 2007 and Jim Blackler's YieldAdapter library from 2008 (which is also mentioned in the other answer).
Both will allow you to write code with yield return-like construct in Java, so both will satisfy your request. The notable diff...
Different names of JSON property during serialization and deserialization
...
Just tested and this works:
public class Coordinates {
byte red;
@JsonProperty("r")
public byte getR() {
return red;
}
@JsonProperty("red")
public void setRed(byte red) {
this.red = red;
}
}
T...
Can (domain name) subdomains have an underscore “_” in it?
...r, domain name parts must be 63 octets or shorter in
length.... All post-converted name parts that contain internationalized characters begin with the string "bq--". (...) The string "bq--" was chosen because it is extremely unlikely
to exist in host parts before this specification was produced....
What is the difference between a field and a property?
In C#, what makes a field different from a property, and when should a field be used instead of a property?
32 Answers
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Will the base class constructor be automatically called?
...e -> Most Derived.
So in your particular instance, it calls Person(), and then Customer() in the constructor orders. The reason why you need to sometimes use the base constructor is when the constructors below the current type need additional parameters. For example:
public class Base
{
p...
How to use Swift @autoclosure
...})
// "It's true"
If we omit the braces, we are passing in an expression and that's an error:
f(pred: 2 > 1)
// error: '>' produces 'Bool', not the expected contextual result type '() -> Bool'
@autoclosure creates an automatic closure around the expression. So when the caller writes an...
Is the primary key automatically indexed in MySQL?
...implicit when defining the primary key? Is the answer the same for MyISAM and InnoDB?
9 Answers
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