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Check if a table exists in Rails
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In Rails 5 the API became explicit regarding tables/views, collectively data sources.
# Tables and views
ActiveRecord::Base.connection.data_sources
ActiveRecord::Base.connection.data_source_exists? 'kittens'
# Tables
ActiveRecord::Base.co...
How to send a correct authorization header for basic authentication
I am trying to POST data from my API but I can't pass the basic authentication.
5 Answers
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Browse and display files in a git repo without cloning
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Not the exact, but a way around.
Use GitHub Developer API
Opening this will get you the recent commits.
https://api.github.com/repos/learningequality/ka-lite/commits
You can get the specific commit details by attaching the commit hash in the end of above url.
All the files (...
Java: Date from unix timestamp
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java.time
Java 8 introduced a new API for working with dates and times: the java.time package.
With java.time you can parse your count of whole seconds since the epoch reference of first moment of 1970 in UTC, 1970-01-01T00:00Z. The result is an Instant.
In...
Can I do a synchronous request with volley?
... } catch (InterruptedException e) {
Log.e("Retrieve cards api call interrupted.", e);
errorListener.onErrorResponse(new VolleyError(e));
} catch (ExecutionException e) {
Log.e("Retrieve cards api call failed.", e);
errorListener.onErrorRes...
How to check if activity is in foreground or in visible background?
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If targeting API level 14 or above, one can use android.app.Application.ActivityLifecycleCallbacks
public class MyApplication extends Application implements ActivityLifecycleCallbacks {
private static boolean isInterestingActivityVi...
Catching all javascript unhandled exceptions
...ve to listen for them specifically." -developer.mozilla.org/en-US/docs/Web/API/…
– shusson
Mar 3 '14 at 0:33
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How can I interrupt a ServerSocket accept() method?
...nge, that there is no this info in docs: download.oracle.com/javase/6/docs/api/java/net/… method is not marked as throwing SocketException. It is only mentioned here download.oracle.com/javase/1.4.2/docs/api/java/net/…
– Vladislav Rastrusny
Apr 7 '11 at 12:...
What are the reasons why Map.get(Object key) is not (fully) generic
...liberal in what you accept from others, but not too liberal. This idiotic API means that you can't tell the difference between "not in the collection" and "you made a static typing mistake". Many thousands of lost programmer hours could have been prevented with get : K -> boolean.
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What is the difference between localStorage, sessionStorage, session and cookies?
...age and sessionStorage
localStorage and sessionStorage are relatively new APIs (meaning, not all legacy browsers will support them) and are near identical (both in APIs and capabilities) with the sole exception of persistence. sessionStorage (as the name suggests) is only available for the duration...