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“Conversion to Dalvik format failed with error 1” on external JAR
...ject properties which caused both android.jar's to conflict. Removing the extra in the Java Build Path did the trick
– styler1972
Aug 4 '11 at 18:50
2
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@UniqueConstraint annotation in Java
...
To ensure a field value is unique you can write
@Column(unique=true)
String username;
The @UniqueConstraint annotation is for annotating multiple unique keys at the table level, which is why you get an error when applying it to a field.
References (JPA TopLink):
@UniqueConstraint
@Column
...
How to add Action Bar from support library into PreferenceActivity?
...oid:minHeight="?attr/actionBarSize"
app:navigationContentDescription="@string/abc_action_bar_up_description"
android:background="?attr/colorPrimary"
app:navigationIcon="?attr/homeAsUpIndicator"
app:title="@string/action_settings"
/>
SettingsActivity.java :
public class Settin...
What is the difference between an interface and a class, and why I should use an interface when I ca
...d MyOtherClass why wouldn't you simply call aClass.WriteLog() why add that extra step. The implementation of WriteLog() would remain different for each of the classes but you already have the object so why pass it to a handler class?
– Zach M.
Dec 19 '14 at 19...
How to build jars from IntelliJ properly?
...he jar will be saved to. To actually build and save it do the following:
Extract to the target Jar
OK
Build | Build Artifact | Build
Try Extracting the .jar file from
ProjectName | out | artifacts | ProjectName_jar | ProjectName.jar
...
ab load testing
...ach request is done, but to instead keep reusing it.
I'm also sending the extra header Accept-Encoding: gzip, deflate because mod_deflate is almost always used to compress the text/html output 25%-75% - the effects of which should not be dismissed due to it's impact on the overall performance of th...
Selecting data frame rows based on partial string match in a column
I want to select rows from a data frame based on partial match of a string in a column, e.g. column 'x' contains the string "hsa". Using sqldf - if it had a like syntax - I would do something like:
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Understanding garbage collection in .NET
...
Now run your program again and tinker with the source code. Note how the extra braces have no effect at all. And note how setting the variable to null makes no difference at all. It will always print "1". It now works the way you hope and expected it would work.
Which does leave with the task ...
How do I update a Linq to SQL dbml file?
... This seems to be the easiest, least destructive method that requires no extra tools and works just fine in VS2017
– Toby
May 8 '17 at 9:16
1
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What's the difference between Ruby's dup and clone methods?
...e object, but where the apple object references other objects (such as the String object color), those references are not copied. Instead, apple and orange both reference the same object! In our example, the reference is the string object 'red'. When orange uses the append method, <<, to modif...