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Difference between SelectedItem, SelectedValue and SelectedValuePath
...our view is bound to (with properties for things like ProductName, Weight, etc). Let's also say you have a CategoryID property on that Product object, and you want the user to be able to select a category for the product from a list of categories. You need the ID property of the Category object to...
How do DATETIME values work in SQLite?
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Integers will always be supported as integers in databases, flat files, etc. You do a little math and cast it into another type and you can format the date anyway you want.
Doing it this way, you don't have to worry when [insert current favorite database here] is replaced with [future favorit...
Why is using a wild card with a Java import statement bad?
...tion can be solved by modern IDEs (hiding imports, refactoring class name, etc...).
– assylias
Feb 5 '13 at 8:10
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MVC4 StyleBundle not resolving images
...iles, these object don't have properties such as "Exists", "DirectoryName" etc.
– Nick Coad
Dec 8 '14 at 5:54
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LINQ Aggregate algorithm explained
...operates on the previous result and the third element and carries forward. etc.
Example 1. Summing numbers
var nums = new[]{1,2,3,4};
var sum = nums.Aggregate( (a,b) => a + b);
Console.WriteLine(sum); // output: 10 (1+2+3+4)
This adds 1 and 2 to make 3. Then adds 3 (result of previous) and 3 ...
Find the Smallest Integer Not in a List
...y understood without the bit twiddling: "Create a Boolean array of size N" etc. Once you understand it that way, moving to a bitwise version is conceptually easy.
– Jon Skeet
Oct 19 '09 at 5:27
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Does “git fetch --tags” include “git fetch”?
A nice and simple question - is the function of "git fetch" a strict sub-set of git fetch --tags ?
6 Answers
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Why are static variables considered evil?
...data is encapsulated in objects (that can be extended, information hiding, etc). Statics, in the way you are describing using them, are essentially to use them as a global variable to avoid dealing with issues like scope. However, global variables is one of the defining characteristics of procedural...
What is Java String interning?
...exists even without interning (since GC is non-deterministic to start with etc), but it makes it somewhat worse. It's always a good idea to use char[] instead of String for sensitive text and zero it out as soon as it's no longer needed.
– chris
Apr 26 '17 at 1...
Why does the default parameterless constructor go away when you create one with parameters
...you accidentally end up not excluding it, you can screw up your invariants etc.
– Jon Skeet
Aug 3 '12 at 8:56
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