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Add primary key to existing table
...andomized names and can cause problems when scripting out or comparing databases
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How do I check if an index exists on a table field in MySQL?
...nd test all the statement using this. This fails on some tables in my database when trying to use it with LiquiBase 1.9.5. Maybe my DB is corrupted. Or maybe it's a bug in the ancient version of LiquiBase I'm stuck using at work.
– Steve Gelman
Jun 21 '17 at...
How do I sort a Set to a List in Java?
... types) .
As an example for a comparator implementation to sort employees based on name
List<Employees> empList = new LinkedList<Employees>(EmpSet);
class EmployeeComparator implements Comparator<Employee> {
public int compare(Employee e1, Employee e2) {
...
Is there a predefined enumeration for Month in the .NET library?
... would award you the correct answer, but I don't think that is part of the base library .net framework. +1 for effort and creativity.
– Mark Rogers
May 22 '09 at 19:37
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How can I upgrade specific packages using pip and a requirements file?
...ccording to pip documentation example 3:
pip install --upgrade django
But based on my experience, using this method will also upgrade any package related to it. Example:
Assume you want to upgrade somepackage that require Django >= 1.2.4 using this kind of method it will also upgrade somepackage...
Checking if sys.argv[x] is defined
...h = sys.argv[1]
else:
blah = 'blah'
Some people prefer the exception-based approach you've suggested (eg, try: blah = sys.argv[1]; except IndexError: blah = 'blah'), but I don't like it as much because it doesn't “scale” nearly as nicely (eg, when you want to accept two or three arguments)...
Fade In Fade Out Android Animation in Java
...
Figured out my own problem. The solution ended up being based in interpolators.
Animation fadeIn = new AlphaAnimation(0, 1);
fadeIn.setInterpolator(new DecelerateInterpolator()); //add this
fadeIn.setDuration(1000);
Animation fadeOut = new AlphaAnimation(1, 0);
fadeOut.setInter...
Determine if ActiveRecord Object is New
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to create PDFs in an Android app? [closed]
...xtWrapper context){
final String APPLICATION_PACKAGE_NAME = context.getBaseContext().getPackageName();
File path = new File( Environment.getExternalStorageDirectory(), APPLICATION_PACKAGE_NAME );
if ( !path.exists() ){ path.mkdir(); }
File file = new File(path, fileName);
try{
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How to delete from multiple tables in MySQL?
...you've piqued my interest. How do you ensure data integrity within the database without constraints?
– paxdiablo
Jul 26 '10 at 23:46
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