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Instance variable: self vs @
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Writing @age directly accesses the instance variable @age. Writing self.age tells the object to send itself the message age, which will usually return the instance variable @age — but could do any number of other things dependi...
What does numpy.random.seed(0) do?
What does np.random.seed do in the below code from a Scikit-Learn tutorial? I'm not very familiar with NumPy's random state generator stuff, so I'd really appreciate a layman's terms explanation of this.
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How to add 30 minutes to a JavaScript Date object?
I'd like to get a Date object which is 30 minutes later than another Date object. How do I do it with JavaScript?
19 Answe...
Android OnClickListener - identify a button
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You will learn the way to do it, in an easy way, is:
public class Mtest extends Activity {
Button b1;
Button b2;
public void onCreate(Bundle savedInstanceState) {
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b1 = (Button) findViewById(R.id.b1);
b2 = (Button) findViewById(R.id.b2)...
Is #pragma once part of the C++11 standard?
Traditionally, the standard and portable way to avoid multiple header inclusions in C++ was/is to use the #ifndef - #define - #endif pre-compiler directives scheme also called macro-guard scheme (see code snippet below).
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T-SQL - function with default parameters
...value, the keyword
DEFAULT must be specified when the function is called in order to
retrieve the default value. This behaviour is different from using
parameters with default values in stored procedures in which omitting
the parameter also implies the default value. An exception to this
b...
How to get city name from latitude and longitude coordinates in Google Maps?
How might I obtain the city name in Google Maps if I have latitude and longitude coordinates of a town or area?
15 Answers
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Android and setting alpha for (image) view alpha
Is there really no XML attribute counterpart to setAlpha(int) ?
9 Answers
9
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Eclipse / Android : “Errors running builder 'Android Pre Compiler' on project…”
Attempting to do some work on an Android project I haven't worked on for a couple of months, yet every time I attempt to build the project Eclipse throws up a dialog saying:
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“Could not find bundler” error
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Make sure you're entering "bundle" update, if you have the bundler gem installed.
bundle update
If you don't have bundler installed, do gem install bundler.
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