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Convert a series of parent-child relationships into a hierarchical tree?
... I'd like to turn into as few heirarchical tree structures as possible. So for example, these could be the pairings:
11 Ans...
Why do I need to override the equals and hashCode methods in Java?
...als(). Failure to do so will result in a violation of the general contract for Object.hashCode(), which will prevent your class from functioning properly in conjunction with all hash-based collections, including HashMap, HashSet, and Hashtable.
Let's try to understand it with an example of what wou...
Where can I find my Facebook application id and secret key?
...ed "My Applications" from which you can select an application to see its information.
You can also go straight here as well, which will list your apps on the left.
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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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How to open the Google Play Store directly from my Android application?
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For projects using the Gradle build system, appPackageName is in fact BuildConfig.APPLICATION_ID. No Context/Activity dependencies, reducing the risk of memory leaks.
– Christian García
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XPath to find elements that does not have an id or class
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Pretty straightforward:
//tr[not(@id) and not(@class)]
That will give you all tr elements lacking both id and class attributes. If you want all tr elements lacking one of the two, use or instead of and:
//tr[not(@id) or not(@class)]
W...
Find a string by searching all tables in SQL Server Management Studio 2008
Is there any way to search for a string in all tables of a database in SQL Server Management Studio 2008?
8 Answers
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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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Using -performSelector: vs. just calling the method
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Basically performSelector allows you to dynamically determine which selector to call a selector on the given object. In other words the selector need not be determined before runtime.
Thus even though these are equivalent:
[anObject ...
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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