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MySQL order by before group by
...e correcly sorting the rows before the GROUP BY. But unfortunately, if you read the documentation carefully, you'll notice that this assumption is not true.
When selecting non-aggregated columns that are not always the same, MySql is free to choose any value, so the resulting value that it actually...
How to display a confirmation dialog when clicking an link?
...e a library like jQuery that will help with cross-browser issues). You can read more about this advanced event handling method on MDN.
jQuery
I'd like to stay far away from being considered a jQuery fanboy, but DOM manipulation and event handling are two areas where it helps the most with browser ...
“Single-page” JS websites and SEO
...mantically rich markup that is "accessible" (i.e. can be accessed, viewed, read, processed, or otherwise used) to all these different browsers. A screen reader, a search engine crawler or a user with JavaScript enabled, should all be able to use/index/understand your site's core functionality withou...
Tips for a successful AppStore submission? [closed]
In a day or two I'll be ready to submit my iPhone app to the AppStore and I'm curious whether people who have gone through this process have any tips / suggestions for a smooth submission process.
...
Items in JSON object are out of order using “json.dumps”?
... Note that JSON objects are unordered still; a JSON client can read the object definition and completely ignore the order of the keys and be fully RFC compliant.
– Martijn Pieters♦
Aug 7 '13 at 14:46
...
How can I echo a newline in a batch file?
...r - there are examples of failure for each of those suggestions. Carefully read dostips.com/forum/viewtopic.php?p=4554#p4554.
– dbenham
Jul 29 '15 at 12:23
3
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How do I enable/disable log levels in Android?
...ARN
Later versions of Android appear to require that /data/local.prop be read only. This file is read at boot time so you'll need to restart after updating it. If /data/local.prop is world writable, it will likely be ignored.
Finally, you can set them programmatically using the System.setProper...
How do you beta test an iphone app?
...ertificate From a Certificate Authority...
The dialog that pops up should aready have your email and name it it.
Select the radio button Saved to disk and Continue.
Save the file to disk.
Go back to the Provisioning Portal.
Go to the section Certificates.
Go to the tab Distribution.
Click the button...
Get current directory name (without full path) in a Bash script
...ell input
# ...useful to make hidden characters readable.
Note that if you're applying this technique in other circumstances (not PWD, but some other variable holding a directory name), you might need to trim any trailing slashes. The below uses bash's extglob support ...
Python memoising/deferred lookup property decorator
...be deferred, ie. not be initialised in the constructor but only upon first read. These attributes do not change over the lifetime of the instance, but they're a real bottleneck to calculate that first time and only really accessed for special cases. Hence they can also be cached after they've been r...