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Finding out whether a string is numeric or not
...return 'YES' for that string, per the documentation, having found "a valid integer representation". Furthermore, it did exactly that in a test on iOS 4.3.2. However, NSNumberFormatter did return nil.
– Tommy
May 23 '11 at 10:56
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Do unix timestamps change across timezones?
...mestamp represents a moment that is the same everywhere. Of course you can convert back and forth to a local timezone representation (time 1397484936 is such-and-such local time in New York, or some other local time in Djakarta) if you want.
The article at http://en.wikipedia.org/wiki/Unix_time is ...
What does this symbol mean in JavaScript?
...This is also a Community Wiki, so everyone is invited to participate in maintaining this list.
1 Answer
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Select top 10 records for each category
... This works, but be aware that rank() is likely to be turned into a full table sort by the query planner if there isn't an index who's first key is the RankCriteria. In this case you may get better mileage selecting the distinct sections and cross applying to pick out the top 10 ordere...
Printing tuple with string formatting in Python
So, i have this problem.
I got tuple (1,2,3) which i should print with string formatting.
eg.
14 Answers
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Android: Remove all the previous activities from the back stack
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The solution proposed here worked for me:
Java
Intent i = new Intent(OldActivity.this, NewActivity.class);
// set the new task and clear flags
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(i);
Kotlin
val i = Intent(this, New...
Classes vs. Modules in VB.NET
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When one of my VB.NET classes has all shared members I either convert it to a Module with a matching (or otherwise appropriate) namespace or I make the class not inheritable and not constructable:
Public NotInheritable Class MyClass1
Private Sub New()
'Contains only shared me...
embedding image in html email
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If it does not work, you may try one of these tools that convert the image to an HTML table (beware the size of your image though):
http://stylecampaign.com/blog/2009/12/bypass-image-blocking-by-converting-images-to-html/
http://neil.fraser.name/software/img2html/
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How do I join two lists in Java?
...o not modifiy the original lists; JDK only, no external libraries. Bonus points for a one-liner or a JDK 1.3 version.
32 An...
When should a class be Comparable and/or Comparator?
... another object. The class itself must implements the java.lang.Comparable interface in order to be able to compare its instances.
Comparator
A comparator object is capable of comparing two different objects. The class is not comparing its instances, but some other class’s instances. This compar...