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How to determine if binary tree is balanced?
...at into the programming language of your choice should be trivial.
Bonus exercise: this naive code sketch traverses the tree far too many times when computing the heights. Can you make it more efficient?
Super bonus exercise: suppose the tree is massively unbalanced. Like, a million nodes deep on ...
Can you do this HTML layout without using tables?
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Except when you're using a table for presentational layout rather than tabular data just because it's easier at first pale, in which case you're headed down a dark and dangerous path.
– One Crayon
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Differences between Emacs and Vim
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(the text below is my opinion, it should not be taken as fact or an insult)
With Emacs you are expected to have it open 24/7 and live inside the program, almost everything you do can be done from there. You write your own extension...
Should __init__() call the parent class's __init__()?
... is then also optional whether to use the super identifier, or whether to explicitly name the super class:
object.__init__(self)
In case of object, calling the super method is not strictly necessary, since the super method is empty. Same for __del__.
On the other hand, for __new__, you should in...
Using Sinatra for larger projects via multiple files
...e independent files, so when let's say somebody calls "/" - one action is executed, and if smth like "/posts/2" is received then another action - similar logic that is applied in PHP?
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How to implement one-to-one, one-to-many and many-to-many relationships while designing tables?
Can anyone explain how to implement one-to-one, one-to-many and many-to-many relationships while designing tables with some examples?
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Process all arguments except the first one (in a bash script)
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Use this:
echo "${@:2}"
The following syntax:
echo "${*:2}"
would work as well, but is not recommended, because as @Gordon already explained, that using *, it runs all of the arguments together as a single argument with spaces, while @ preserves the breaks between ...
What is the maximum possible length of a .NET string?
...uthoritative answer might require some knowledge of internals. Would the maximum change on a 64-bit system?
7 Answers
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How can I get the sha1 hash of a string in node.js?
...r shasum = crypto.createHash('sha1')
shasum.update('foo')
shasum.digest('hex') // => "0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33"
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Exit a Script On Error
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Are you looking for exit?
This is the best bash guide around.
http://tldp.org/LDP/abs/html/
In context:
if jarsigner -verbose -keystore $keyst -keystore $pass $jar_file $kalias
then
echo $jar_file signed sucessfully
else
echo ERROR: Fa...