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leading zeros in rails
I have fields hr and min , both integers in my application. For hr field, if the user enters "1" I would like Rails to automatically pad it to "01" before saving it to the database. Also for the min field if the user enter "0" it should put in as "00".
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Stopping python using ctrl+c
I have a python script that uses threads and makes lots of HTTP requests. I think what's happening is that while a HTTP request (using urllib2) is reading, it's blocking and not responding to Ctrl C to stop the program. Is there any way around this?
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sql query to return differences between two tables
...ies. I need to check three pieces of data in doing so, FirstName, LastName and Product.
12 Answers
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What does it mean for a data structure to be “intrusive”?
I've seen the term intrusive used to describe data structures like lists and stacks, but what does it mean?
2 Answers
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Matrix Transpose in Python
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@AntonyHatchkins This is not needed with Python 3.0 and above. There, zip already returns an iterator: docs.python.org/3.0/whatsnew/…
– xuiqzy
May 9 at 13:06
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private[this] vs private
...t very rich Java background I learnt to close everything (make it private) and open (provide accessors) if necessary. Scala introduces even more strict access modifier. Should I always use it by default? Or should I use it only in some specific cases where I need to explicitly restrict changing fiel...
What is the best algorithm for overriding GetHashCode?
...he implementation given in Josh Bloch's fabulous Effective Java. It's fast and creates a pretty good hash which is unlikely to cause collisions. Pick two different prime numbers, e.g. 17 and 23, and do:
public override int GetHashCode()
{
unchecked // Overflow is fine, just wrap
{
i...
Cannot pass null argument when using type hinting
...on Type $t = null whereas if you need to make an argument accept both null and its type, you can follow above example.
You can read more here.
PHP 7.0 or older
You have to add a default value like
function foo(Type $t = null) {
}
That way, you can pass it a null value.
This is documented i...
What do
...m, what? Maybe there's documentation somewhere, but search engines don't handle "names" like "
4 Answers
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Remove Application Insight from application on Visual Studio 2013
...pplication insight to a project which creates a ApplicationInsights.config and not sure what other files were added to the project.
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