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How to get the Android device's primary e-mail address
...ntManager.getAccounts or AccountManager.getAccountsByType to get a list of all account names on the device. Fortunately, for certain account types (including com.google), the account names are email addresses. Example snippet below.
Pattern emailPattern = Patterns.EMAIL_ADDRESS; // API level 8+
Acc...
How to test if parameters exist in rails
...re asking about existence. You might need to differentiate:
Not there at all.
There but nil.
There but false.
There but an empty string.
as well. Hard to say without more details of your precise situation.
share
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How do you follow an HTTP Redirect in Node.js?
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It is. It's called http.request the API is pretty simple.
– Raynos
Oct 23 '12 at 20:24
3
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What is an example of the simplest possible Socket.io example?
...ovided this answer. That being said, here is the original answer updated small-small for the newer API.
Just because I feel nice today:
index.html
<!doctype html>
<html>
<head>
<script src='/socket.io/socket.io.js'></script>
<script>
...
Evenly distributing n points on a sphere
...ating an array N points and node[k] is the kth (from 0 to N-1). If that is all that is confusing you, hopefully you can use that now.
(in other words, k is an array of size N that is defined before the code fragment starts, and which contains a list of the points).
Alternatively, building on the o...
Why should I learn Lisp? [closed]
I really feel that I should learn Lisp and there are plenty of good resources out there to help me do it.
29 Answers
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How to break out of multiple loops?
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Its usually possible to refactor the inner loop into its own method, that returns true to continue, false to break the outer loop. while condition1: / if not MyLoop2(params): break. An alternative is to set a boolean flag, that is ...
Importing a CSV file into a sqlite3 database table using Python
...lumn headers in the csv file. And close the connection to the database by calling con.close() at the end.
– Jonas
Aug 8 '16 at 21:31
1
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OnChange event handler for radio button (INPUT type=“radio”) doesn't work as one value
... It would be better to cache the function outside the loop, so that all radios share the same event handler (now they have identical handlers but they are different functions). Or maybe put all radios inside a wrapper and use event delegation
– Oriol
Aug...
How do I check if a type provides a parameterless constructor?
...Type.EmptyTypes, null);
There's a caveat for value types, which aren't allowed to have a default constructor. You can check if you have a value type using the Type.IsValueType property, and create instances using Activator.CreateInstance(Type);
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