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JavaScript: What are .extend and .prototype used for?
...otypeJS, copies all properties from the source to the destination object.
Now about the prototype property, it is a member of function objects, it is part of the language core.
Any function can be used as a constructor, to create new object instances. All functions have this prototype property.
W...
What's the best Django search app? [closed]
...at this point. Maybe they will fix it in the future but its in a bad place now.
– Aaron Schif
Jul 31 '13 at 15:21
I ag...
How do you delete a column by name in data.table?
...hough data.table is gradually moving away from using this argument so it's now discouraged where you can avoid it; showing here so you know the option exists in case you really do need it:
# Method 5a (like Method 3)
df3[, !"foo", with=FALSE]
# Method 5b (like Method 4)
df3[, !grep("^foo$", names(...
iPhone system font
... the situation. Personally, I wish I had hardcoded Helvetica... doing that now.
– Dan Rosenstark
Aug 22 '13 at 0:06
To...
How to change SmartGit's licensing option after 30 days of commercial use on ubuntu?
...ust clicking "next" button : ) (30 day trial and then you have to buy it). Now today is my 31st day of using SG and I can't change my licensing options (reinstalling smartgit doesn't help) and I'm not able to use SG anymore without paying (I'm not using it for commercial purposes). Do you know how t...
How to add extension methods to Enums
...ve days")]
Week,
[Description("Twenty-one days")]
Month
}
Now you want to be able to do something like:
Duration duration = Duration.Week;
var description = duration.GetDescription(); // will return "Five days"
Your extension method GetDescription() can be written as follows:
us...
How to print a stack trace in Node.js?
Does anyone know how to print a stack trace in Node.js?
11 Answers
11
...
Regex lookahead, lookbehind and atomic groups
...ume any characters so that search for REGEX_2 starts at the same location. Now REGEX_2 makes sure that the string matches some other rules. Without look-ahead it would match strings of length three or five.
Negative lookahead
Syntax:
(?!REGEX_1)REGEX_2
Match only if REGEX_1 does not match; af...
Error 1022 - Can't write; duplicate key in table
...out this sort of thing when I opened the project.
– SnowInferno
Oct 1 '14 at 0:17
Thank you, mate :) That helps me a l...
SQLite in Android How to update a specific row
I've been trying to update a specific row for a while now, and it seems that there are two ways to do this. From what I've read and tried, you can just use the:
...