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Can I pass parameters by reference in Java?
...Java is confusing because everything is passed by value. However for a parameter of reference type (i.e. not a parameter of primitive type) it is the reference itself which is passed by value, hence it appears to be pass-by-reference (and people often claim that it is). This is not the case, as show...
How to echo shell commands as they are executed
... script, how do I echo all shell commands called and expand any variable names?
13 Answers
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How to get parameters from the URL with JSP
In JSP how do I get parameters from the URL?
9 Answers
9
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How to get last key in an array?
... key (quoting) :
end() advances array 's internal pointer to the last element, and returns its value.
key() returns the index element of the current array position.
So, a portion of code such as this one should do the trick :
$array = array(
'first' => 123,
'second' => 456,
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Get list from pandas DataFrame column headers
I want to get a list of the column headers from a pandas DataFrame. The DataFrame will come from user input so I won't know how many columns there will be or what they will be called.
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How do I assign an alias to a function name in C++?
It's easy to create a new name for a type, a variable or a namespace. But how do I assign a new name to a function? For example, I want to use the name holler for printf . #define is obvious... any other way?
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Find and replace strings in vim on multiple lines
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The :&& command repeats the last substitution with the same flags. You can supply the additional range(s) to it (and concatenate as many as you like):
:6,10s/<search_string>/<replace_string>/g | 14,18&&
If you have many ranges though, I'd rather use a loop:
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Hidden features of Ruby
Continuing the "Hidden features of ..." meme, let's share the lesser-known but useful features of Ruby programming language.
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fancybox2 / fancybox causes page to to jump to the top
I have implemented fancybox2 on a dev site.
10 Answers
10
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How to do exponentiation in clojure?
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Clojure.contrib.math is now deprecated, see Math.Numeric-Tower
– alvaro g
Mar 14 '16 at 17:23
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