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Gridview with two columns and auto resized images
I'm trying to make a gridview with two columns. I mean two photos per row side by side just like this image.
2 Answers
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B-Tree vs Hash Table
...K they evolved from scalable replication where re-hashing is not easy.
Its called RUSH - Replication Under Scalable Hashing, and those algorithms are thus called RUSH algorithms.
However there may be a point where your index exceeds a tolerable size compared to your hash sizes and your entire index...
SQL WHERE.. IN clause multiple columns
...o this derived table:
select * from table1 LEFT JOIN
(
Select CM_PLAN_ID, Individual_ID
From CRM_VCM_CURRENT_LEAD_STATUS
Where Lead_Key = :_Lead_Key
) table2
ON
table1.CM_PLAN_ID=table2.CM_PLAN_ID
AND table1.Individual=table2.Individual
WHERE table2.CM_PLAN_ID IS NOT NULL
...
Can I concatenate multiple MySQL rows into one field?
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You can use GROUP_CONCAT:
SELECT person_id, GROUP_CONCAT(hobbies SEPARATOR ', ')
FROM peoples_hobbies
GROUP BY person_id;
As Ludwig stated in his comment, you can add the DISTINCT operator to avoid duplicates:
SELECT person_id, GROUP_CONCAT(DISTINCT hobbies SEPARA...
How to overload the operator++ in two different ways for postfix a++ and prefix ++a?
...'t, postfix is much better. An example would be an iterator where you typically use: for(pos=c.begin(); ...; ++pos) {} instead of pos++
– Eric
Oct 2 '10 at 16:28
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Get checkbox value in jQuery
... this:
$("input[type='checkbox']").val();
Or if you have set a class or id for it, you can:
$('#check_id').val();
$('.check_class').val();
However this will return the same value whether it is checked or not, this can be confusing as it is different to the submitted form behaviour.
To check w...
Scrollview vertical and horizontal in android
...d solution:
Custom ScrollView:
package com.scrollable.view;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ScrollView;
public class VScroll extends ScrollView {
public VScroll(Context context, AttributeSet attrs, int ...
How do I link to part of a page? (hash?)
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If there is an <a name="foo"> tag or any tag with an id (e.g., <div id="foo">), then you can simply append #foo to the URL. Otherwise, you can't arbitrarily link to portions of a page.
Here's a complete example: <a href="http://example.com/page.html#foo">Jump to #...
What's the difference between libev and libevent?
...ibev simply doesn't have one (for example, there is a very related library called libeio that does asynchronous I/O, which can be used independently or together with libev, so you can mix and match).
So in short, libev tries to do one thing only (POSIX event library), and this in the most efficient...
Generating statistics from Git repository [closed]
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I'm doing a git repository statistics generator in ruby, it's called git_stats.
You can find examples generated for some repositories on project page.
Here is a list of what it can do:
General statistics
Total files (text and binary)
Total lines (added and deleted)
Total commits
Au...