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What is copy-on-write?
... of data when underlaying data are updated. Instant snapshots are used for testing uses or moment-dependent reports and should not be used to replace backups.
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Error: Cannot access file bin/Debug/… because it is being used by another process
...error is only when you're building your application during development and testing and only in Visual Studio, not for any deployed application running on client systems.
– ScottN
Jul 13 '15 at 15:38
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Rails 3 datatypes?
...smallint/bigint can be set by using :limit option with :integer. I have tested it on Rails 3 and MySQL, they are still working, just as said in the blog, they are signed integer.
– RacsO
Dec 18 '13 at 3:23
...
Facebook Open Graph not clearing cache
...rary you have to import it first: <script src="code.jquery.com/jquery-latest.min.js" type="text/javascript"></script>
– Zhorzh Alexandr
Apr 8 '14 at 13:51
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Efficient way to insert a number into a sorted array of numbers?
...
Just as a single data point, for kicks I tested this out inserting 1000 random elements into an array of 100,000 pre-sorted numbers using the two methods using Chrome on Windows 7:
First Method:
~54 milliseconds
Second Method:
~57 seconds
So, at least on this set...
What is the ideal data type to use when storing latitude / longitude in a MySQL database?
... this for a navigation database built from ARINC424 I did a fair amount of testing and looking back at the code, I used a DECIMAL(18,12) (Actually a NUMERIC(18,12) because it was firebird).
Floats and doubles aren't as precise and may result in rounding errors which may be a very bad thing. I can't...
Prevent any form of page refresh using jQuery/Javascript
...y available in Chrome, Firefox, and Opera.
var bc = new BroadcastChannel('test_channel');
bc.onmessage = function (ev) {
if(ev.data && ev.data.url===window.location.href){
alert('You cannot open the same page in 2 tabs');
}
}
bc.postMessage(window.location.href);
...
Django - How to rename a model field using South?
...I had a column with a uniqueness constraint, renamed it using this method, tested that the uniqueness constraint still existed and got an error but the name of the constraint itself was still using the old column name. Perhaps an explicit db.delete_unique and db.create_unique would have done it but ...
Error: request entity too large
... about this problem.
[edit - found the solution]
After some research and testing, I found that when debugging, I added app.use(express.bodyParser({limit: '50mb'}));, but after app.use(express.json());. Express would then set the global limit to 1mb because the first parser he encountered when runn...
How to display all methods of an object?
...sure there are others) are't normal objects. To see this, create a simple test script:
<html>
<body>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js"></script>
<script type="text/javascript">
$(functi...