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What happens when a duplicate key is put into a HashMap?
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edited Nov 4 '09 at 0:10
answered Nov 3 '09 at 20:22
Pa...
How do MySQL indexes work?
...gh the pages one by one (in a database, this is "poor selectivity").
For a 10-page book, it makes no sense to make an index, as you may end up with a 10-page book prefixed by a 5-page index, which is just silly - just scan the 10 pages and be done with it.
The index also needs to be useful - there's...
Android: upgrading DB version and adding new table
...o 3, they just get the revision 3 update... After all, you can't count on 100% of your user base to upgrade each time you release an update. Sometimes they skip an update or 12 :)
5. Keeping your revision numbers under control while developing
And finally... calling
adb uninstall <yourpack...
jQuery Mobile: document ready vs. page events
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edited Sep 10 '17 at 20:43
community wiki
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Unable to find specific subclass of NSManagedObject
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Martin RMartin R
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How to initialize all the elements of an array to any specific value in java
...l the elements to a specific value? Whenever we write int[] array=new int[10]; , this simply initialize an array of size 10 having all elements equal to zero. I just want to change this initialization integer for one of my array. i.e. I want to initialize an array which has all elements equal to ...
Set “this” variable easily?
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edited Dec 27 '15 at 9:10
Casimir Crystal
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a...
What is IP address '::1'?
...owLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\...
How to drop SQL default constraint without knowing its name?
...e nvarchar(256)
declare @col_name nvarchar(256)
declare @Command nvarchar(1000)
set @schema_name = N'MySchema'
set @table_name = N'Department'
set @col_name = N'ModifiedDate'
select @Command = 'ALTER TABLE ' + @schema_name + '.[' + @table_name + '] DROP CONSTRAINT ' + d.name
from sys.tables t
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Is there a “null coalescing” operator in JavaScript?
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edited Apr 10 at 19:03
community wiki
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