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1052: Column 'id' in field list is ambiguous
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Confusing! Because nothing is actually removed from the SQL language, SQL-89 is a proper subset of SQL-92. The OP's syntax is valid SQL-92 syntax (and. unless I'm missing something, yours is valid SQL-89 syntax). I consider INNER JOIN to be 'depreciated' sinc...
How to “test” NoneType in python?
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It can also be done with isinstance as per Alex Hall's answer :
>>> NoneType = type(None)
>>> x = None
>>> type(x) == NoneType
True
>>> isinstance(x, NoneType)
True
isinstance is also intuitive but there is the complication that it re...
LLVM vs clang on OS X
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LLVM originally stood for "low-level virtual machine", though it now just stands for itself as it has grown to be something other than a traditional virtual machine. It is a set of libraries and tools, as well as a standardized intermed...
How do I debug Node.js applications?
...er supporting WebSocket. Breakpoints, profiler, livecoding, etc... It is really awesome.
Install it with:
npm install -g node-inspector
Then run:
node-debug app.js
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Is there a way to take a screenshot using Java and save it to some sort of image?
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Believe it or not, you can actually use java.awt.Robot to "create an image containing pixels read from the screen." You can then write that image to a file on disk.
I just tried it, and the whole thing ends up like:
Rectangle screenRect = new Rectangle(T...
How do I encode/decode HTML entities in Ruby?
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HTMLEntities can do it:
: jmglov@laurana; sudo gem install htmlentities
Successfully installed htmlentities-4.2.4
: jmglov@laurana; irb
irb(main):001:0> require 'htmlentities'
=> []
irb(main):002:0> HTMLEntities.new.decode "¡I'm highly annoyed...
Override body style for content in an iframe
...e, I am hiding an element with a specific class in the inner iframe.
Basically, you just append a 'style' element to the 'head' of the inner iframe.
$('iframe').load( function() {
$('iframe').contents().find("head")
.append($("<style type='text/css'> .my-class{display:none;} <...
linq query to return distinct field values from a list of objects
... it's easy - project to that with Select and then use the normal Distinct call.)
In MoreLINQ we have the DistinctBy operator which you could use:
var distinct = list.DistinctBy(x => x.typeID);
This only works for LINQ to Objects though.
You can use a grouping or a lookup, it's just somewhat ...
What modern C++ libraries should be in my toolbox? [closed]
...abase
SOCI
OTL
LMDB++
Design
IoC Frameworks
Hypodermic
PocoCapsule
Wallaroo
Documents
LibreOffice API
PoDoFo
Graphics
Allegro
OGRE
SFML
GUI
FLTK
GTK
Qt
Qwt
wxWidgets
VTK
Hashing
MurmurHash3
Imaging
Boost.GIL
CImg
DevIL
EasyBMP
FreeImage
ITK
OpenCV
Logging
Boost.Log
log4cxx
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Brew update failed: untracked working tree files would be overwritten by merge
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Works for me. Literally type this cd $(brew --prefix)
– Saran
Apr 25 '14 at 4:41
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