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How to delete or add column in SQLITE?
...mplementation based on the Sqlite's recommended way to do this:
private void dropColumn(SQLiteDatabase db,
ConnectionSource connectionSource,
String createTableCmd,
String tableName,
String[] colsToRemove) throws java.sql.SQLException {
List<String> update...
How to link to a named anchor in Multimarkdown?
...er to it on the same page by [link text](#abcd).
(This uses name= and not id=, for reasons explained in this answer.)
Remote references can use [link text](http://...#abcd) of course.
This works like a dream, provided you have control over the source and target texts. The anchor can even appear i...
If threads share the same PID, how can they be identified?
...
The four threads will have the same PID but only when viewed from above. What you (as a user) call a PID is not what the kernel (looking from below) calls a PID.
In the kernel, each thread has it's own ID, called a PID (although it would possibly make more sens...
Nested attributes unpermitted parameters
...hing like
params.require(:person).permit(:name, :age, pets_attributes: [:id, :name, :category])
Some more details can be found in the Ruby edge API docs and strong_parameters on github or here
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How do I use su to execute the rest of the bash script as that user?
...
I did this - but it still asked me for a password.
– Hippyjim
Oct 19 '13 at 16:30
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Is it possible to start a shell session in a running container (without ssh)
...
EDIT: Now you can use docker exec -it "id of running container" bash (doc)
Previously, the answer to this question was:
If you really must and you are in a debug environment, you can do this: sudo lxc-attach -n <ID>
Note that the id needs to be the full on...
jQuery Ajax POST example with PHP
...
Basic usage of .ajax would look something like this:
HTML:
<form id="foo">
<label for="bar">A bar</label>
<input id="bar" name="bar" type="text" value="" />
<input type="submit" value="Send" />
</form>
jQuery:
// Variable to hold request
var...
How to join two sets in one line without using “|”
...tely according to a simple test: a = set((1, 2, 3,)); b = set((1, 3, 4,)); id_a = id(a); a |= b; assert id_a == id(a), @jorgenkg is right - variable a is modified inline. Am I missing something?
– johndodo
Jan 7 '18 at 10:06
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HTML.ActionLink vs Url.Action in ASP.NET Razor
...mple:
@Html.ActionLink("link text", "someaction", "somecontroller", new { id = "123" }, null)
generates:
<a href="/somecontroller/someaction/123">link text</a>
and Url.Action("someaction", "somecontroller", new { id = "123" }) generates:
/somecontroller/someaction/123
There is a...
Android getting value from selected radiobutton
...
Tested and working. Check this
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android....