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Memoization in Haskell?
...d that f !! 143 exists, but its exact value is not calculated. It's still set as some unknown result of a calculation. The only exact values calculated are the ones needed.
So initially, as far as how much has been calculated, the program knows nothing.
f = ....
When we make the request f !! ...
Should you always favor xrange() over range()?
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iOS: Multi-line UILabel in Auto Layout
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Use -setPreferredMaxLayoutWidth on the UILabel and autolayout should handle the rest.
[label setPreferredMaxLayoutWidth:200.0];
See the UILabel documentation on preferredMaxLayoutWidth.
Update:
Only need to set the height con...
XPath contains(text(),'some string') doesn't work when used with node with more than one Text subnod
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* is a selector that matches any element (i.e. tag) -- it returns a node-set.
The [] are a conditional that operates on each individual node in that node set. It matches if any of the individual nodes it operates on match the conditions inside the brackets.
text() is a selector that matches all of...
Using global variables between files?
...an way to solve this problem: move all globals to a file, I call this file settings.py. This file is responsible for defining globals and initializing them:
# settings.py
def init():
global myList
myList = []
Next, your subfile can import globals:
# subfile.py
import settings
def stuf...
EF Code First “Invalid column name 'Discriminator'” but no inheritance
...the derived class.
Example:
class Person
{
public string Name { get; set; }
}
[NotMapped]
class PersonViewModel : Person
{
public bool UpdateProfile { get; set; }
}
Now, even if you map the Person class to the Person table on the database, a "Discriminator" column will not be created be...
ASP.NET MVC - Set custom IIdentity or IPrincipal
...ed to do something fairly simple: in my ASP.NET MVC application, I want to set a custom IIdentity / IPrincipal. Whichever is easier / more suitable. I want to extend the default so that I can call something like User.Identity.Id and User.Identity.Role . Nothing fancy, just some extra properties.
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How to find and turn on USB debugging mode on Nexus 4
In settings on my Nexus 4 device there isn't any "USB debugging options" item. How do I find and turn on USB debugging mode on Nexus 4?
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What Makes a Good Unit Test? [closed]
...ut order of test execution. Ensure 'clean slate' before each test by using setup/teardown appropriately
Professional: In the long run you'll have as much test code as production (if not more), therefore follow the same standard of good-design for your test code. Well factored methods-classes with i...
Change One Cell's Data in mysql
...ably need to specify which rows you want to update...
UPDATE
mytable
SET
column1 = value1,
column2 = value2
WHERE
key_value = some_value;
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