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What's the difference between backtracking and depth first search?
...ing is a more general purpose algorithm.
Depth-First search is a specific form of backtracking related to searching tree structures. From Wikipedia:
One starts at the root (selecting some node as the root in the graph case) and explores as far as possible along each branch before backtracking....
Using an HTML button to call a JavaScript function
...:
if(navigator.appName == 'Netscape')
{
vesdiameter = document.forms['Volume'].elements['VesDiameter'].value;
// more stuff snipped
}
else
{
vesdiameter = eval(document.all.Volume.VesDiameter.value);
// more stuff snipped
}
I'm on Chrome, so navigator...
How does this print “hello world”?
...64₁₀ = 1000000₂ (l & 31 | 64).
So far the 5-bit group is of the form: 10xxxxx₂ (space would be 1011111₂ = 95₁₀).
If we can map space to 0 unaffecting other values, then we can turn the 6th bit on and that should be all.
Here is what the mod 95 part comes to play, space is 1011111...
Using getopts to process long and short command line options
I wish to have long and short forms of command line options invoked using my shell script.
32 Answers
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What is the best Distributed Brute Force countermeasure?
...hile bots were still hammering away at it, I would employ a 'backup' login form with a CAPTCHA. So that, when you display the "Sorry, but you can't login from this IP address at the moment" message, include a link that says "secure backup login - HUMANS ONLY (bots: no lying)". Joke aside, when they ...
Pagination on a list using ng-repeat
...as a piped filter, and then dropping the controls wherever you like in the form of a single directive, <dir-pagination-controls>
To take the original example asked by Tomarto, it would look like this:
<ul class='phones'>
<li class='thumbnail' dir-paginate='phone in phones | filt...
Generate Java classes from .XSD files…?
...mycompany.quickbooks.obj quickbooks.xsd
Wait a bit, and if you had a well-formed XSD file, you will get some well-formed Java classes
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Get lengths of a list in a jinja2 template
... Thanks @AlexMartelli. In addition we could use inline syntax like {{ form.select_field(size=5 if form.select_field.choices|count > 5 else form.select_field.choices|count) }}
– Filipe Bezerra de Sousa
Jun 28 at 23:52
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URL Fragment and 302 redirects
...fragment identifiers in redirected URLs" [RURL]. The
term "Persistent Uniform Resource Locator (PURL)" designates a URL (a
special case of a URI) that points to another one through an HTTP
redirect. For more information, refer to "Persistent Uniform Resource
Locators" [PURL]. Example:
S...
What is base 64 encoding used for?
...ly don't do it by just streaming the bits and bytes over the wire in a raw format. Why? because some media are made for streaming text. You never know -- some protocols may interpret your binary data as control characters (like a modem), or your binary data could be screwed up because the underly...