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What is the difference between Θ(n) and O(n)?
...ou can read the definition on Wikipedia or consult a classic textbook like Introduction to Algorithms by Cormen et al.
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how to create a file name with the current date & time in python?
...ormat you specify:
import time
timestr = time.strftime("%Y%m%d-%H%M%S")
print timestr
yields:
20120515-155045
so your filename could append or use this string.
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How to make Entity Framework Data Context Readonly
...Set<Customer>().AsNoTracking();
}
}
public override int SaveChanges()
{
// Throw if they try to call this
throw new InvalidOperationException("This context is read-only.");
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
...
How to find a min/max with Ruby
...
In addition to the provided answers, if you want to convert Enumerable#max into a max method that can call a variable number or arguments, like in some other programming languages, you could write:
def max(*values)
values.max
end
Output:
max(7, 1234, 9, -78, 156)
=> 12...
How to link to part of the same document in Markdown?
... Thanks, this was exactly what I needed. I was using Textmate to convert Markdown to HTML, will switch to pandoc.
– recipriversexclusion
May 13 '10 at 3:08
1
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Android Studio: Plugin with id 'android-library' not found
...
Use
apply plugin: 'com.android.library'
to convert an app module to a library module. More info here: https://developer.android.com/studio/projects/android-library.html
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Using isKindOfClass with Swift
I'm trying to pick up a bit of Swift lang and I'm wondering how to convert the following Objective-C into Swift:
5 Answers
...
How to break out of a loop from inside a switch?
...e no terminating condition. (Arguably, this has already happened, so the point is moot.)
Alternative to "Go To"
The following code is better form:
while( isValidState() ) {
execute();
}
bool isValidState() {
return msg->state != DONE;
}
Advantages
No flag. No goto. No exception. Easy...
What strategies and tools are useful for finding memory leaks in .NET?
...ul about the number of objects that we inflated in memory. In the end, we converted all of our data objects over to an "inflate on-demand" (just before a field is requested) in order to reduce memory overhead and increase performance.
EDIT: Here's a further explanation of what I mean by "inflate o...
How to use permission_required decorators on django class-based views
...ort method_decorator
def class_view_decorator(function_decorator):
"""Convert a function based decorator into a class based decorator usable
on class based Views.
Can't subclass the `View` as it breaks inheritance (super in particular),
so we monkey-patch instead.
"""
def ...