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MySQL Creating tables with Foreign Keys giving errno: 150
...ined by mistake. See @andrewdotn's answer below for instructions on how to identify these problem FK's.
Hope this helps.
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Can I draw rectangle in XML?
...arlier:
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/listview_background_shape">
<stroke android:width="2dp" android:color="#ff207d94" />
<padding android:left="2dp"
android:top="2dp"
...
Can someone explain collection_select to me in clear, simple terms?
...
collection_select(
:post, # field namespace
:author_id, # field name
# result of these two params will be: <select name="post[author_id]">...
# then you should specify some collection or array of rows.
# It can be Author.where(..).order(..) or something like...
Is there any difference between “foo is None” and “foo == None”?
...termines how == is handled when used on a Python object. Here we have overridden it so that when == is used on objects of type Foo it always returns true. There isn't an equivalent method for the is operator and so the behaviour of is cannot be changed in the same way.
– Brenda...
Android- create JSON Array and JSON Object
How can I create a JSON with this format in Android:
Since the API that I will be passing will parse JsonArray then the object.
Or would it be okay if just to pass a json object? Since I will just have to insert 1 transaction per service call.
...
How to check if a stored procedure exists before creating it
...tly same things a stored proc would do, but is not stored on the database side.
That's much like what is called anonymous procedure in PL/SQL.
Update:
Your question title is a little bit confusing.
If you only need to create a procedure if it not exists, then your code is just fine.
Here's what...
Best way for a 'forgot password' implementation? [closed]
...tten too.
The system has a table password_change_requests with the columns ID, Time and UserID. When the new user presses the button, a record is created in the table. The Time column contains the time when the user pressed the "Forgot Password" button. The ID is a string. A long random string is cr...
How do I create a URL shortener?
...oach. However, you will realize that your proposed algorithm fails if your ID is a prime and greater than 52.
Theoretical background
You need a Bijective Function f. This is necessary so that you can find a inverse function g('abc') = 123 for your f(123) = 'abc' function. This means:
There must ...
Integrating Dropzone.js into existing HTML form with other fields
...sname dropzone, and implement dropzone programmatically.
HTML :
<div id="dZUpload" class="dropzone">
<div class="dz-default dz-message"></div>
</div>
JQuery:
$(document).ready(function () {
Dropzone.autoDiscover = false;
$("#dZUpload").dropzone({
...
REST API Best practice: How to accept list of parameter values as input [closed]
...tep Back
First and foremost, REST describes a URI as a universally unique ID. Far too many people get caught up on the structure of URIs and which URIs are more "restful" than others. This argument is as ludicrous as saying naming someone "Bob" is better than naming him "Joe" – both names get t...