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Meaning of 'const' last in a function declaration of a class?
What is the meaning of const in declarations like these? The const confuses me.
10 Answers
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How to get the original value of an attribute in Rails
...previous value.
For rails 5.1+
Copied from Lucas Andrade's answer below: https://stackoverflow.com/a/50973808/9359123
Appending _was is deprecated in rails 5.1, now you should append _before_last_save
Something like:
before_save object
do_something_with object.name_before_last_save
end
W...
Pretty-Printing JSON with PHP
... offers the JSON_PRETTY_PRINT option for use with the json_encode() call.
http://php.net/manual/en/function.json-encode.php
<?php
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$json_string = json_encode($data, JSON_PRETTY_PRINT);
share
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What is the difference between screenX/Y, clientX/Y and pageX/Y?
...in the browser.
For a visual on which browsers support which properties:
http://www.quirksmode.org/dom/w3c_cssom.html#t03
w3schools has an online Javascript interpreter and editor so you can see what each does
http://www.w3schools.com/jsref/tryit.asp?filename=try_dom_event_clientxy
<!DOC...
Real differences between “java -server” and “java -client”?
...ns share the Java HotSpot runtime environment code base, but use different compilers that are suited to the distinctly unique performance characteristics of clients and servers. These differences include the compilation inlining policy and heap defaults.
Although the Server and the Client VMs are si...
How to create a string with format?
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This method is coming from NSString in Foundation framework. So you have to import Foundation to make this to work correctly. Otherwise the expression will call String.init<T>(T) , and it will produce something like "(\"%@%x %x\", 10)...
Sort a list of tuples by 2nd item (integer value) [duplicate]
I have a list of tuples that looks something like this:
9 Answers
9
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How to find unused/dead code in java projects [closed]
...trumented to log when instances are created. And then a small script could compare these logs against the complete list of classes to find unused classes.
Of course, if you go at the method level you should keep performance in mind. For example, the methods could only log their first use. I dont kn...
Capitalize or change case of an NSString in Objective-C
....text = [[displayDate objectAtIndex:2] uppercaseString];
Documentation: http://developer.apple.com/library/ios/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/Reference/NSString.html#//apple_ref/occ/instm/NSString/uppercaseString
You can also use lowercaseString and capitalizedSt...
Replace words in the body text
Is there a way to replace the normal text within a table element that is placed within the body of the HTML?
10 Answers
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