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SQL - Update multiple records in one query
... config t2
ON t1.config_name = 'name1' AND t2.config_name = 'name2'
SET t1.config_value = 'value',
t2.config_value = 'value2';
Here is SQLFiddle demo
or conditional update
UPDATE config
SET config_value = CASE config_name
WHEN 'name1' THEN 'value'
...
iReport not starting using JRE 8
...understandable: this does not change your (or your company's) default Java settings, that is why i recommend it. This changes iReport's behaviour: iReport will search for the jdk you told it to search for instead of using default Java settings. No matter you will upgrade your Java in the future, iRe...
Android Reading from an Input stream efficiently
... return writer.toString();
}
I always use UTF-8. You could, of course, set charset as an argument, besides InputStream.
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Write a program to find 100 largest numbers out of an array of 1 billion numbers
...billionlog2(billion)
In general, if you need the largest K numbers from a set of N numbers, the complexity is O(NlogK) rather than O(NlogN), this can be very significant when K is very small comparing to N.
EDIT2:
The expected time of this algorithm is pretty interesting, since in each iteration ...
GIT clone repo across local file system in windows
...to GIT. I have been just taking my first steps over the last few days. I setup a repo on my laptop, pulled down the Trunk from an SVN project (had some issues with branches, not got them working), but all seems ok there.
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How do I force my .NET application to run as administrator?
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Your project has to be set up to use the app manifest too - in Project Properties, check the "Application" tab and make sure the "Manifest:" under 'Resources" is set to your app.manifest (or whatever you named the .manifest file).
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How to make a background 20% transparent on Android
...t code :-
https://github.com/duggu-hcd/TransparentColorCode
textviewHeader.setTextColor(Color.parseColor(ColorTransparentUtils.transparentColor(R.color.border_color,10)));
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python exception message capturing
This doesn't seem to work, I get syntax error, what is the proper way of doing this for logging all kind of exceptions to a file
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iPhone app in landscape mode, 2008 systems
..., although doing so this is not straightforward.
Try with this recipe:
set your orientation to UISupportedInterfaceOrientations in the Info.plist file
in your window define a 480x320 "base view controller". Every other view will be added as a subview to its view.
in all view controllers set up t...
R memory management / cannot allocate vector of size n Mb
...e to get 2.4 GB for R, but now comes the worse...
open R and create a data set of 1.5 GB, then reduce its size to 0.5 GB, the Resource Monitor shows my RAM is used at nearly 95%.
use gc() to do garbage collection => it works, I can see the memory use go down to 2 GB
Additional advice that wor...