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Make $JAVA_HOME easily changable in Ubuntu [closed]
In Ubuntu, I'd like to switch my JAVA_HOME environment variable back and forth between Java 5 and 6.
8 Answers
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Exploitable PHP functions
...lowed. Rather, I'd like to have a grep -able list of red-flag keywords handy when searching a compromised server for back-doors.
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What is the difference between the | and || or operators?
I have always used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: | . What is the difference between those two usages? Are there any caveats when using one over the other or are they interchangeable?
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Getting scroll bar width using JavaScript [duplicate]
...inJS apps
document.body.appendChild(outer);
// Creating inner element and placing it in the container
const inner = document.createElement('div');
outer.appendChild(inner);
// Calculating difference between container's full width and the child width
const scrollbarWidth = (outer.offset...
How to delete the contents of a folder?
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If you're working with a very large directory, and particularly a network directory on windows, and you can control the environment in which this program runs, it might be worth using Py3.5's "os.scandir(folder)" function instead of listdir. The syntax is quite different ...
What is the difference between new/delete and malloc/free?
What is the difference between new / delete and malloc / free ?
15 Answers
15
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Android DialogFragment vs Dialog
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Yes, use DialogFragment and in onCreateDialog you can simply use an AlertDialog builder anyway to create a simple AlertDialog with Yes/No confirmation buttons. Not very much code at all.
With regards handling events in your fragment there would be ...
vector vs. list in STL
... different type of container:
What are the complexity guarantees of the standard containers?
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Label encoding across multiple columns in scikit-learn
I'm trying to use scikit-learn's LabelEncoder to encode a pandas DataFrame of string labels. As the dataframe has many (50+) columns, I want to avoid creating a LabelEncoder object for each column; I'd rather just have one big LabelEncoder objects that works across all my columns of data. ...
How to properly compare two Integers in Java?
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Integer y = ...;
System.out.println(x == y);
this will check whether x and y refer to the same object rather than equal objects.
So
Integer x = new Integer(10);
Integer y = new Integer(10);
System.out.println(x == y);
is guaranteed to print false. Interning of "small" autoboxed values can l...