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How do I query if a database schema exists
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Just to be extra "defensive", the following version generates a Type conversion error to account for the possibility (however unlikely) of > 1 matching Schema's similar to how validation code often intentionally Throw Exception's bec...
SQL Server: Difference between PARTITION BY and GROUP BY
...about PARTITION BY , it sounds a lot like GROUP BY , maybe with a little extra functionality added in? Are they two versions of the same general functionality, or are they something different entirely?
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UITableViewHeaderFooterView: Unable to change background color
...es not generate any warning message. Apple code does not have 'background' string at all. Of course, uitableVuewHeaderFooterview.contentView is nil in TVAnimationsGestures. I don't understand why this happen.
– kmugitani
Feb 6 '15 at 5:54
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What could cause java.lang.reflect.InvocationTargetException?
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You've added an extra level of abstraction by calling the method with reflection. The reflection layer wraps any exception in an InvocationTargetException, which lets you tell the difference between an exception actually caused by a failure ...
Google Maps: How to create a custom InfoWindow?
...ts to manipulate with a simple external stylesheet.
There are a couple of extra pieces (that are not strictly needed) which handle things like giving a hook into the div with the close info window image in it.
The final loop hides all the pieces of the pointer arrow. I needed this myself as I want...
New self vs. new static
...get_class($b->create1()), get_class($b->create2()));
The results:
string(1) "B"
string(1) "B"
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Windows batch: formatted date into variable
...MyDate set MyDate=%%x
Then you can extract the individual parts using substrings:
set today=%MyDate:~0,4%-%MyDate:~4,2%-%MyDate:~6,2%
Another way, where you get variables that contain the individual parts, would be:
for /f %%x in ('wmic path win32_localtime get /format:list ^| findstr "="') do...
View markdown files offline [closed]
... thanks, a Chrome extension would always be useful; no need to use extra software
– Avi
Sep 26 '13 at 1:55
39
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Regular vs Context Free Grammars
...re's an analogous pumping lemma for context-free languages that breaks the strings in the language into five parts, uvxyz, and where all instances of the language are in uvixyiz, for i ≥ 0. Now, you have two "nonterminals" that can be replicated, or pumped, as long as you have the same number.
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Getting reference to the top-most view/window in iOS application
...n. Which view is top visible on any given point?
@implementation UIView (Extra)
- (UIView *)findTopMostViewForPoint:(CGPoint)point
{
for(int i = self.subviews.count - 1; i >= 0; i--)
{
UIView *subview = [self.subviews objectAtIndex:i];
if(!subview.hidden && CGRe...