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Update a record without first querying?
Lets say I query the database and load a list of items. Then I open one of the items in a detail view form, and instead of re-querying the item out of the database, I create an instance of the item from the datasource in the list.
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Which websocket library to use with Node.js? [closed]
Currently there is a plethora of websocket libraries for node.js, the most popular seem to be:
3 Answers
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Multiline string literal in C#
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You can use the @ symbol in front of a string to form a verbatim string literal:
string query = @"SELECT foo, bar
FROM table
WHERE id = 42";
You also do not have to escape special characters when you use this method, except for double quotes a...
Adding :default => true to boolean in existing Rails column
I've seen a few questions (namely this one ) here on SO about adding a default boolean value to an existing column. So I tried the change_column suggestion but I mustn't be doing it right.
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How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method
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The tilde operator isn't actually part of jQuery at all - it's a bitwise NOT operator in JavaScript itself.
See The Great Mystery of the Tilde(~).
You are getting strange numbers in your experiments because you are performing a bitwise logical operation on an integer (which, for all I kn...
How to set time delay in javascript
I have this a piece of js in my website to switch images but need a delay when you click the image a second time. The delay should be 1000ms. So you would click the img.jpg then the img_onclick.jpg would appear. You would then click the img_onclick.jpg image there should then be a delay of 1000ms be...
Get file name from URL
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Instead of reinventing the wheel, how about using Apache commons-io:
import org.apache.commons.io.FilenameUtils;
public class FilenameUtilTest {
public static void main(String[] args) throws Exception {
URL url = new URL("http://www.example.com/some...
How can I get the DateTime for the start of the week?
How do I find the start of the week (both Sunday and Monday) knowing just the current time in C#?
32 Answers
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What Computer Science concepts should I know? [closed]
What concepts in Computer Science do you think have made you a better programmer?
33 Answers
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There is no ViewData item of type 'IEnumerable' that has the key 'xxx'
There are a couple of posts about this on Stack Overflow but none with an answer that seem to fix the problem in my current situation.
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