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Rails: Missing host to link to! Please provide :host parameter or set default_url_options[:host]
...tion for action_mailer won't help. The use case is similar to this: Rails.application.routes.url_helpers.message_image_url(2)
– Boti
Jul 8 '14 at 8:50
...
Change color of PNG image via CSS?
...e that you insert your hex color value and it returns the needed filter to apply this color to png
CSS filter generator to convert from black to target hex color
for example i needed my png to have the following color #1a9790
then you have to apply the following filter to you png
filter: invert(...
How to send a message to a particular client with socket.io
... ended up wasting a lot of time trying to overcome the limitations of this approach. See @az7ar's solution and this explanation for why it's better.
– Daniel Que
Aug 13 '14 at 1:07
...
Using Vim's tabs like buffers
...uffer (:make, :grep, and :helpgrep are the ones that spring to mind) will happily ignore tabs and there's nothing you can do to stop that.
Instead:
:set hidden
If you don't have this set already, then do so. It makes vim work like every other multiple-file editor on the planet. You can have edi...
Paste text on Android Emulator
...ers - after trying to send 'ლ\(ಠ益ಠლ\)', it just says 'Killed' or appears to succeed and nothing is typed, nor do I have anything pasteable in the emulator. The SMS method (I tried from DDMS) doesn't even seem to be working here, it displays as "?(????)" :(
– Groxx
...
Are there good reasons not to use an ORM? [closed]
During my apprenticeship, I have used NHibernate for some smaller projects which I mostly coded and designed on my own. Now, before starting some bigger project, the discussion arose how to design data access and whether or not to use an ORM layer. As I am still in my apprenticeship and still cons...
Copying data from one SQLite database to another
...o attach Database X with Database Y using the ATTACH command, then run the appropriate Insert Into commands for the tables you want to transfer.
INSERT INTO X.TABLE SELECT * FROM Y.TABLE;
Or, if the columns are not matched up in order:
INSERT INTO X.TABLE(fieldname1, fieldname2) SELECT fieldname...
How to set timer in android?
...ary.
import java.util.Timer;
import java.util.TimerTask;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Handler.Callback;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public...
How to detect orientation change in layout in Android?
...portrait", Toast.LENGTH_SHORT).show();
}
}
You also have to edit the appropriate element in your manifest file to include the android:configChanges
Just see the code below:
<activity android:name=".MyActivity"
android:configChanges="orientation|keyboardHidden"
android:...
How can I run code on a background thread on Android?
...
AsyncTask is just a wrapper around the Thread anyhow, so it doesn't solve the problem of Android killing the application while it is in background
– Lassi Kinnunen
Nov 20 '18 at 3:36
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