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How do I use Ruby for shell scripting?
...t:
#!/usr/bin/env ruby
require 'pathname'
p Pathname.new($0).realpath()
For file system operations I almost always use Pathname. This is a wrapper for many of the other file system related classes. Also useful: Dir, File...
...
Circular (or cyclic) imports in Python
...It answers your question pretty thoroughly.
Imports are pretty straightforward really. Just remember the following:
'import' and 'from xxx import yyy' are executable statements. They execute
when the running program reaches that line.
If a module is not in sys.modules, then an import...
Why are #ifndef and #define used in C++ header files?
...
@Kevin: that is what I mean. I wanted to manipulate a form which was opened by the form to manipulate. It gaveme lots of errors and I didn't know what to do. I gave up =)
– user142019
Oct 31 '09 at 10:58
...
Iterate over object keys in node.js
...lowing, however it will also load all the keys into memory
Object.keys(o).forEach(function(key) {
var val = o[key];
logic();
});
However since Object.keys is a native method it may allow for better optimisation.
Benchmark
As you can see Object.keys is significantly faster. Whether the actua...
Python: avoid new line with print command [duplicate]
...rint command, it prints whatever I want and then goes to a different line. For example:
5 Answers
...
Selenium wait until document is ready
...Timeout(10, TimeUnit.SECONDS);
The above code will wait up to 10 seconds for page loading. If the page loading exceeds the time it will throw the TimeoutException. You catch the exception and do your needs. I am not sure whether it quits the page loading after the exception thrown. i didn't try t...
bool to int conversion
...
int x = 4<5;
Completely portable. Standard conformant. bool to int conversion is implicit!
§4.7/4 from the C++ Standard says (Integral Conversion)
If the source type is bool, the value false is converted to zero and
the value true is converted to one.
As for ...
How should the ViewModel close the form?
...Result) just by setting a property. MVVM as it should be.
Here's the code for DialogCloser:
using System.Windows;
namespace ExCastle.Wpf
{
public static class DialogCloser
{
public static readonly DependencyProperty DialogResultProperty =
DependencyProperty.RegisterAtt...
Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
...u mean this to be empty vs. something that might be added to later is good for your code.
– Jay Bazuzi
Dec 12 '09 at 17:43
27
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Rename multiple files in a directory in Python [duplicate]
...e.bar cheese_cheese_type.foo
$ python
>>> import os
>>> for filename in os.listdir("."):
... if filename.startswith("cheese_"):
... os.rename(filename, filename[7:])
...
>>>
$ ls
cheese_type.bar cheese_type.foo
...