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Can a decorator of an instance method access the class?
... Thanks I think this is the route with which to go. Just one extra line of code for any class I'd want to use this decorator. Maybe I could use a custom metaclass and perform this same check during new...?
– Carl G
Mar 17 '10 at 0:29
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Find value in an array
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I'm guessing that you're trying to find if a certain value exists inside the array, and if that's the case, you can use Array#include?(value):
a = [1,2,3,4,5]
a.include?(3) # => true
a.include?(9) # => false
If you mean something else, check the Ruby Array API
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Check if property has attribute
...hat is the fastest way to determine if it contains a given attribute? For example:
8 Answers
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String comparison in bash. [[: not found
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$ sh myscript
you should try:
$ bash myscript
or, if the script is executable:
$ ./myscript
sh and bash are two different shells. While in the first case you are passing your script as an argument to the sh interpreter, in the second case you decide on the very first line which interpreter...
Getting image dimensions without reading the entire file
... Func<BinaryReader, Size>>()
{
{ new byte[]{ 0x42, 0x4D }, DecodeBitmap},
{ new byte[]{ 0x47, 0x49, 0x46, 0x38, 0x37, 0x61 }, DecodeGif },
{ new byte[]{ 0x47, 0x49, 0x46, 0x38, 0x39, 0x61 }, DecodeGif },
{ new byte[]{ 0x89, 0x50, 0x4E,...
How to sort a list in Scala by two fields?
how to sort a list in Scala by two fields, in this example I will sort by lastName and firstName?
4 Answers
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Get month name from number
... can see that calendar.month_name[3] would return March, and the array index of 0 is the empty string, so there's no need to worry about zero-indexing either.
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Delete a key from a MongoDB document using Mongoose
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This has been fixed in Mongoose 2.X, so you can leave the collection out.
– staackuser2
Nov 13 '11 at 22:30
4
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Where should I put the log4j.properties file?
...F\classes of the project as mentioned previously in this thread.
Put log4j-xx.jar under WEB-INF\lib
Test if log4j was loaded: add -Dlog4j.debug @ the end of your java options of tomcat
Hope this will help.
rgds
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Can we open pdf file using UIWebView on iOS?
...0, 10, 200, 200)];
NSURL *targetURL = [NSURL URLWithString:@"https://www.example.com/document.pdf"];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[webView loadRequest:request];
[self.view addSubview:webView];
Swift
let webView = UIWebView(frame: CGRect(x: 10, y: 10, width: 2...