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How to create a unique index on a NULL column?
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Pretty sure you can't do that, as it violates the purpose of uniques.
However, this person seems to have a decent work around:
http://sqlservercodebook.blogspot.com/2008/04/multiple-null-values-in-unique-index-in.html
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Execute another jar in a Java program
I had written several simple java applications named as A.jar, B.jar.
6 Answers
6
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Android: why is there no maxHeight for a View?
...eeded which was a ScrollView set to wrap_content but having a maxHeight so it would stop expanding after a certain point and start scrolling. I just simply overrode the onMeasure method in ScrollView.
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
heightMeasu...
Difference between open and codecs.open in Python
...in text", HTML, XML and JSON) in Python 2 you should always use io.open() with an explicit encoding, or open() with an explicit encoding in Python 3. Doing so means you get correctly decoded Unicode, or get an error right off the bat, making it much easier to debug.
Pure ASCII "plain text" is a myt...
how to get the cookies from a php curl into a variable
So some guy at some other company thought it would be awesome if instead of using soap or xml-rpc or rest or any other reasonable communication protocol he just embedded all of his response as cookies in the header.
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Detect all changes to a (immediately) using JQuery
...follow
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edited Nov 5 '14 at 18:19
answered May 21 '10 at 21:31
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Cartesian product of x and y array points into single array of 2D points
...follow
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edited May 23 '17 at 11:55
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answered Jun 21 '12 at ...
How do I analyze a program's core dump file with GDB when it has command-line parameters?
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You can use the core with GDB in many ways, but passing parameters which is to be passed to the executable to GDB is not the way to use the core file. This could also be the reason you got that error. You can use the core file in the following way...
iPhone: Detecting user inactivity/idle time since last screen touch
...llTouches count only ever seems to be 1, so anyObject works here.
UITouchPhase phase = ((UITouch *)[allTouches anyObject]).phase;
if (phase == UITouchPhaseBegan || phase == UITouchPhaseEnded)
[self resetIdleTimer];
}
}
- (void)resetIdleTimer {
if (idleTimer) {
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Assignment inside lambda expression in Python
...ts assignment inside of lambda expressions. This operator can only appear within a parenthesized (...), bracketed [...], or braced {...} expression for syntactic reasons. For example, we will be able to write the following:
import sys
say_hello = lambda: (
message := "Hello world",
sys.stdo...