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When to use Comparable and Comparator
...e sorting was an unusual use of the class, or the sorting only makes sense for a specific use case, then a Comparator is a better option.
Put another way, given the class name, is it clear how a comparable would sort, or do you have to resort to reading the javadoc? If it is the latter, odds are ev...
Do AJAX requests retain PHP Session info?
...page request. They are both HTTP requests, and they both contain cookie information in the header in the same way.
From the client side, the same cookies will always be sent to the server whether it's a regular request or an AJAX request. The Javascript code does not need to do anything special o...
MySQL: How to copy rows, but change a few fields?
...build your SQL statement :). The way you would do it would be to use the information_schema to get the column names for the table. But that's really overkill, I'd just type out the column names.
– dcp
May 6 '10 at 18:21
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iPhone get SSID without private library
... of the network it is connected to: If it is connected to a Adhoc network for a 3rd party hardware device it needs to be functioning in a different manner than if it is connected to the internet.
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How do I specify unique constraint for multiple columns in MySQL?
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For those people using MySQL workbench: go to the Indexes tab and select UNIQUE as your type. Give your index a name and check the appropriate columns under the section "Index Columns"
– Pakman
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The object cannot be deleted because it was not found in the ObjectStateManager
...y Framework?. You are right, this seems to be the issue in my case. Thanks for the quick answer!
– Matt
Sep 6 '13 at 10:44
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How can I decrease the size of Ratingbar?
... android:scaleX=".5"
android:scaleY=".5"
android:transformPivotX="0dp"
android:transformPivotY="0dp"
android:isIndicator="true"
android:max="5" />
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Rails where condition using NOT NIL
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Last one here isn't working for me, do we need an extra gem or plugin for this? I get: rails undefined method 'not_eq' for :confirmed_at:Symbol..
– Tim Baas
Jun 7 '11 at 10:21
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Hibernate error - QuerySyntaxException: users is not mapped [from users]
...eserved word in a few DB implementations. In fact, this issue only came up form me when I renamed that db table from user to the_user (part of fixing another issue) before that JPA was fine.
– Michael Coxon
Jun 16 '18 at 22:08
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Problems with Android Fragment back stack
...ay the android fragment backstack seems to work and would be most grateful for any help that is offered.
9 Answers
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