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What scalability problems have you encountered using a NoSQL data store? [closed]
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I've switched a small subproject from MySQL to CouchDB, to be able to handle the load. The result was amazing.
About 2 years ago, we've released a self written software on http://www.ubuntuusers.de/ (which is probably the biggest German Linux...
onSaveInstanceState () and onRestoreInstanceState ()
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Usually you restore your state in onCreate(). It is possible to restore it in onRestoreInstanceState() as well, but not very common. (onRestoreInstanceState() is called after onStart(), whereas onCreate() is called before onStar...
How to define custom exception class in Java, the easiest way?
...nstructors, you need to define the one taking a String in your class. Typically you use super(message) in your constructor to invoke your parent constructor. For example, like this:
public class MyException extends Exception {
public MyException(String message) {
super(message);
}
}...
How to create UILabel programmatically using Swift?
How do I create a UILabel programmatically using Swift in Xcode 6?
12 Answers
12
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Adding external library in Android studio
...nspecting.... But there are docs available : developer.android.com/sdk/installing/studio-build.html
– malcubierre
Sep 2 '14 at 6:28
26
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How to create directory automatically on SD card
...ollowing location
FileOutputStream fos = new FileOutputStream("/sdcard/Wallpaper/"+fileName);
but I'm getting the exception java.io.FileNotFoundException
However, when I put the path as "/sdcard/" it works.
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Calculate the date yesterday in JavaScript
...is would fail as getDate returns the day of the month (eg: 1 - 31) but actually setDate(0) sets the date to the last day of the previous month. Does this work across all browsers though?
– Drew Noakes
Mar 21 '14 at 14:19
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how to get request path with express req object
..., and req.path could be missing mounting points depending upon where it's called. expressjs.com/en/api.html#req.originalUrl
– Christian Davis
Jul 21 '17 at 19:06
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How to override the properties of a CSS class using another CSS class
...round: none; }
wins simply by order, i.e. by being after an otherwise equally “powerful” rule. But this imposes restrictions and requires you to be careful in any reorganization of style sheets.
These are all examples of the CSS Cascade, a crucial but widely misunderstood concept. It defines ...
What's wrong with foreign keys?
... get Orphaned Rows
you can get nice "on delete cascade" behavior, automatically cleaning up tables
knowing about the relationships between tables in the database helps the Optimizer plan your queries for most efficient execution, since it is able to get better estimates on join cardinality.
FKs giv...