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SQL/mysql - Select distinct/UNIQUE but return all columns?
...a distinct on statement:
select distinct on field1 *
from table
On most platforms, however, neither of the above will work because the behavior on the other columns is unspecified. (The first works in MySQL, if that's what you're using.)
You could fetch the distinct fields and stick to picking a...
What's a good way to extend Error in JavaScript?
...N, or EcmaScript Language Specification, section 15.11) Everything else is platform specific.
Mosts environments set the stack property, but fileName and lineNumber are practically useless to be used in inheritance.
So, the minimalistic approach is:
function MyError(message) {
this.name = 'My...
Why does C++ not have reflection?
...t important: C++ is intended to be suitable for writing standalone code on platforms where memory costs money; if eliminating some unused code would allow a program to fit in a microcontroller that costs $2.00, rather than one that costs $2.50, and if the code is going in 1,000,000 units, eliminatin...
How to do version numbers? [closed]
...example a progressive migration to microservices or a migration to another platform that involves dramatic changes over base code,
– Alexis Gamarra
Jun 9 '17 at 16:22
add a co...
How do I interactively unstage a particular hunk in git?
...ettier/better GUI clients, but git gui is lightweight, built-in, and cross platform (lin, win, mac).
https://git-scm.com/docs/git-gui
Simply right click on a hunk to stage/unstage. For lines, highlight the lines first, then right click.
...
detach all packages while working in R
...egan 2.0-0
> sessionInfo()
R version 2.13.1 Patched (2011-09-13 r57007)
Platform: x86_64-unknown-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_GB.utf8 LC_NUMERIC=C
[3] LC_TIME=en_GB.utf8 LC_COLLATE=en_GB.utf8
[5] LC_MONETARY=C LC_MESSAGES=en_GB.utf8
...
What is sys.maxint in Python 3?
...and is typically the same
as sys.maxint in previous releases on the same platform (assuming the
same build options).
http://docs.python.org/3.1/whatsnew/3.0.html#integers
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Launching Google Maps Directions via an intent on Android
...));
UPDATE
In May 2017 Google launched the new API for universal, cross-platform Google Maps URLs:
https://developers.google.com/maps/documentation/urls/guide
You can use Intents with the new API as well.
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When is SQLiteOpenHelper onCreate() / onUpgrade() run?
...So when the database helper constructor is called with a name (2nd param), platform checks if the database exists or not and if the database exists, it gets the version information from the database file header and triggers the right call back
As already explained in the older answer, if the databa...
SecurityException: Permission denied (missing INTERNET permission?)
...er in Jun 2013, so it's bit dated nowadays. Many things changed in Android platform since version 6 (Marshmallow), making the whole problem more/less obsolete nowadays. However I believe this post can still be worth reading as general problem analysis approach example.
Exception you are getting (...