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How to get a password from a shell script without echoing
...pty because it was not echoed to the terminal.
[susam@cube ~]$ read a b c
foo \bar baz \qux
[susam@cube ~]$ echo a=$a b=$b c=$c
a=foo b=bar c=baz qux
[susam@cube ~]$ unset a b c
[susam@cube ~]$ read_secret a b c
[susam@cube ~]$ echo a=$a b=$b c=$c
a=foo b=bar c=baz qux
[susam@cube ~]$ unset a b c
...
How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g
...nd a non-numeric type, the numeric type comes first.
>>> 5 < 'foo'
True
>>> 5 < (1, 2)
True
>>> 5 < {}
True
>>> 5 < [1, 2]
True
When you order two incompatible types where neither is numeric, they are ordered by the alphabetical order of their typen...
Python memoising/deferred lookup property decorator
...have cachedproperty:
from boltons.cacheutils import cachedproperty
class Foo(object):
def __init__(self):
self.value = 4
@cachedproperty
def cached_prop(self):
self.value += 1
return self.value
f = Foo()
print(f.value) # initial value
print(f.cached_prop) #...
Adding additional data to select options using jQuery
...
HTML Markup
<select id="select">
<option value="1" data-foo="dogs">this</option>
<option value="2" data-foo="cats">that</option>
<option value="3" data-foo="gerbils">other</option>
</select>
Code
// JavaScript using jQuery
$(function()...
How to print a debug log?
... there is a stream for that, so file_put_contents('php://stderr', print_r($foo, TRUE)) will nicely dump the value of $foo into the Apache error log.
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What is Angular.noop used for?
...as a placeholder when you need to pass some function as a param.
function foo (callback) {
// Do a lot of complex things
callback();
}
// Those two have the same effect, but the later is more elegant
foo(function() {});
foo(angular.noop);
...
Detail change after Git pull
... a --- as divider between local and remote to make it more clear)
*master
foo
bar
baz
---
origin/HEAD -> origin/master
origin/deploy
origin/foo
origin/master
origin/bar
remote2/foo
remote2/baz
When you then take a look at one remote repo, you will see what you are referring to:
git remote show ...
XDocument or XmlDocument
...rs and others
For instance, given the Xml document:
<xml>
<foo>
<baz id="1">10</baz>
<bar id="2" special="1">baa baa</bar>
<baz id="3">20</baz>
<bar id="4" />
<bar id="5" />
</foo>
...
Rails layouts per action?
...u can specify the layout for an individual action using respond_to:
def foo
@model = Bar.first
respond_to do |format|
format.html {render :layout => 'application'}
end
end
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Difference between 'new operator' and 'operator new'?
...
"operator new"
class Foo
{
public:
void* operator new( size_t );
}
"new operator":
Foo* foo = new Foo();
In this example, new Foo() calls Foo::operator new()
In other words, "new operator" calls "operator new()" just like the + oper...