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How to read a single char from the console in Java (as the user types it)?
...e an easy way to read a single char from the console as the user is typing it in Java? Is it possible? I've tried with these methods but they all wait for the user to press enter key:
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What is the purpose of Order By 1 in SQL select statement?
...ough some old code at work, and have noticed that there are several views with an order by 1 clause. What does this accomplish?
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Difference between abstract class and interface in Python
...lowing:
class Abstract1( object ):
"""Some description that tells you it's abstract,
often listing the methods you're expected to supply."""
def aMethod( self ):
raise NotImplementedError( "Should have implemented this" )
Because Python doesn't have (and doesn't need) a formal...
How to colorize diff on the command line?
When I have a diff, how can I colorize it so that it looks good? I want it for the command line, so please no GUI solutions.
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String replacement in java, similar to a velocity template
...here any String replacement mechanism in Java, where I can pass objects with a text, and it replaces the string as it occurs.
For example, the text is :
...
using gitignore to ignore (but not delete) files
I have a tmp directory in my git repo I'd like to still exist, but be ignored. I added it to .gitignore , but git status still tells me about changes to files in that directory. I tried git rm -r --cached , but that removes it from the remote repo. How can I stop tracking changes to this dire...
Deleting array elements in JavaScript - delete vs splice
... will delete the object property, but will not reindex the array or update its length. This makes it appears as if it is undefined:
> myArray = ['a', 'b', 'c', 'd']
["a", "b", "c", "d"]
> delete myArray[0]
true
> myArray[0]
undefined
Note that it is not in fact set to the value und...
Credit card expiration dates - Inclusive or exclusive?
Say you've got a credit card number with an expiration date of 05/08 - i.e. May 2008.
10 Answers
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SQL error “ORA-01722: invalid number”
... string into a number, and the string cannot be converted into a number.
Without seeing your table definition, it looks like you're trying to convert the numeric sequence at the end of your values list to a number, and the spaces that delimit it are throwing this error. But based on the informatio...
What is a “cache-friendly” code?
...e other end of the memory spectrum (DRAM), the memory is very cheap (i.e. literally millions of times cheaper) but takes hundreds of cycles after a request to receive the data. To bridge this gap between super fast and expensive and super slow and cheap are the cache memories, named L1, L2, L3 in d...