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private final static attribute vs private final attribute
... this with an instance variable: in that case, there's one independent version of the variable per instance of the class. So for example:
Test x = new Test();
Test y = new Test();
x.instanceVariable = 10;
y.instanceVariable = 20;
System.out.println(x.instanceVariable);
prints out 10: y.instanceVa...
What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
...by String Pool ? And what is the difference between the following declarations:
5 Answers
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How do I get started with Node.js [closed]
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You can follow these tutorials to get started
Tutorials
NodeSchool.io interactive lessons
The Art of Node (an introduction to Node.js)
Hello World
Hello World Web Server (paid)
Node.js guide
Build a blog with Node.js, express and MongoDB
Node.js for Beginners
Learn Node.js Completely ...
Get the POST request body from HttpServletRequest
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I prefer this solution due to it's a pure Java without any 3rd party dependency.
– lu_ko
Aug 31 '16 at 13:32
51
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Which is the preferred way to concatenate a string in Python?
...string. And this can be true, in some cases. Here, for example, is one
million appends of a one-character string, first to a string, then to a list:
a += b:
0.10780501365661621
a.append(b):
0.1123361587524414
OK, turns out that even when the resulting string is a million characters long, appendin...
Drop columns whose name contains a specific string from pandas DataFrame
....contains('^test', case=False)]
toto riri
0 x x
1 x x
if mixed-types is a possibility, specify na=False as well.
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How can I convert my device token (NSData) into an NSString?
I am implementing push notifications. I'd like to save my APNS Token as a String.
29 Answers
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A beginner's guide to SQL database design [closed]
...the problem you have to solve and design the schema accordingly;
This is a mix of database design decision and your database vendor custom capabilities (ie. you should check the documentation of your (r)dbms and eventually learn some "tips & tricks" for scaling), also the configuration of your d...
Get user profile picture by Id
I'm now working on a web application which is mostly based of facebook graph api.
I hold some data about users - actually , the possible public data available - such as name and id.
I also know that a profile picture is a part of the public data, and I wondered how I'll be able to get a direct link ...
CSS - Overflow: Scroll; - Always show vertical scroll bar?
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Just ran into this problem myself. OSx Lion hides scrollbars while not in use to make it seem more "slick", but at the same time the issue you addressed comes up: people sometimes cannot see whether a div has a scroll feature or not.
The fix: In your css include ...