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how to generate migration to make references polymorphic
...ic. Instead, you should see the actual fields that Rails uses (the Rails Guides have more info).
– Michelle Tilley
Apr 4 '11 at 15:44
2
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How exactly does the android:onClick XML attribute differ from setOnClickListener?
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No, that is not possible via code. Android just implements the OnClickListener for you when you define the android:onClick="someMethod" attribute.
Those two code snippets are equal, just implemented in two different ways.
Code Implementation
Button btn = (Button...
C# Pass Lambda Expression as Method Parameter
...Job, Student, FullTimeJob>(sql,
lambda,
splitOn: "user_id",
param: parameters).ToList<IJob>();
}
}
You would call it:
getJobs((job, student) => {
job.Student = student;
job.StudentId = student.Id;
return job;
});...
Should each and every table have a primary key?
...y, rethink your design: most probably, you are missing something. Why keep identical records?
In MySQL, the InnoDB storage engine always creates a primary key if you didn't specify it explicitly, thus making an extra column you don't have access to.
Note that a primary key can be composite.
If y...
Generate Java class from JSON?
...schema2pojo plug-in for Maven:
<plugin>
<groupId>org.jsonschema2pojo</groupId>
<artifactId>jsonschema2pojo-maven-plugin</artifactId>
<version>1.0.2</version>
<configuration>
<so...
How to get key names from JSON using jq
...json
$ cat file.json:
{ "Archiver-Version" : "Plexus Archiver", "Build-Id" : "", "Build-Jdk" : "1.7.0_07", "Build-Number" : "", "Build-Tag" : "", "Built-By" : "cporter", "Created-By" : "Apache Maven", "Implementation-Title" : "northstar", "Implementation-Vendor-Id" : "com.test.testPack", "Implem...
Add querystring parameters to link_to
...ht. the new syntax is ` <%= link_to "Create Note", new_note_path(sender_id: @user.id) %>`
– gsumk
Sep 12 '19 at 22:09
add a comment
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What is the recommended way to delete a large number of items from DynamoDB?
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What I ideally want to do is call LogTable.DeleteItem(user_id) -
Without supplying the range, and have it delete everything for me.
An understandable request indeed; I can imagine advanced operations like these might get added o...
Java string to date conversion
...et a java.text.ParseException even though when the format pattern seems valid.
Here's an extract of relevance from the javadoc, listing all available format patterns:
Letter Date or Time Component Presentation Examples
------ ---------------------- ------------------ --------------------...
How can I create tests in Android Studio?
Just downloaded Android Studio which is based off of the Intellij Idea.
12 Answers
12
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