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What's the magic of “-” (a dash) in command-line parameters?
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edited Nov 8 '11 at 3:15
answered Nov 8 '11 at 3:09
p...
When to use ' (or quote) in Lisp?
... passed to it are evaluated. This means you can write this:
(* (+ a 2)
3)
Which in turn evaluates (+ a 2), by evaluating a and 2. The value of the symbol a is looked up in the current variable binding set, and then replaced. Say a is currently bound to the value 3:
(let ((a 3))
(* (+ a 2)
...
How do I render a partial of a different format in Rails?
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Beginning with Rails 3.2.3, when calling render :partial (only works outside of the respond_to block).
render formats: [ :html ]
instead of
render format: 'html'
share
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Elements order in a “for (… in …)” loop
...d make it clear what happens:
var obj = {
"first":"first",
"2":"2",
"34":"34",
"1":"1",
"second":"second"
};
for (var i in obj) { console.log(i); };
// Order listed:
// "1"
// "2"
// "34"
// "first"
// "second"
The technicalities of this are less important than the fact that this may chan...
How to append multiple values to a list in Python
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384
You can use the sequence method list.extend to extend the list by multiple values from any kin...
Array to Hash Ruby
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360
a = ["item 1", "item 2", "item 3", "item 4"]
h = Hash[*a] # => { "item 1" => "item 2", "...
How do I remove leading whitespace in Python?
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324
The lstrip() method will remove leading whitespaces, newline and tab characters on a string be...
Exception NoClassDefFoundError for CacheProvider
...ate so I'm trying to implement some simple web application based on Spring 3 + hibernate 4
while I start tomcat I have this exception:
...
Bootstrap 3 jquery event for active tab change
...nt of time trying to fire a function when the tab changes of the bootstrap 3 tab/navbar and literally all suggestions google spat out were wrong/did not work.
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SQL Inner-join with 3 tables?
I'm trying to join 3 tables in a view; here is the situation:
12 Answers
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