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Does MySQL index foreign key columns automatically?
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edited Feb 13 '19 at 7:26
Nae
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Unable to load DLL (Module could not be found HRESULT: 0x8007007E)
I have dll library with unmanaged C++ API code I need to use in my .NET 4.0 application. But every method i try to load my dll i get an error:
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How to use if - else structure in a batch file?
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Your syntax is incorrect. You can't use ELSE IF. It appears that you don't really need it anyway. Simply use multiple IF statements:
IF %F%==1 IF %C%==1 (
::copying the file c to d
copy "%sourceFile%" "%destinationFile%"
)
IF %F%==1 IF %C%==0 (
::moving th...
What are “named tuples” in Python?
...although there is a recipe for implementation in Python 2.4.
For example, it is common to represent a point as a tuple (x, y). This leads to code like the following:
pt1 = (1.0, 5.0)
pt2 = (2.5, 1.5)
from math import sqrt
line_length = sqrt((pt1[0]-pt2[0])**2 + (pt1[1]-pt2[1])**2)
Using a name...
Array versus linked-list
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It's easier to store data of different sizes in a linked list. An array assumes every element is exactly the same size.
As you mentioned, it's easier for a linked list to grow organically. An array's size needs to be known a...
Is there an IDictionary implementation that, on missing key, returns the default value instead of th
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Indeed, that won't be efficient at all.
You could always write an extension method:
public static TValue GetValueOrDefault<TKey,TValue>
(this IDictionary<TKey, TValue> dictionary, TKey key)
{
TValue ret;
// Ignore return value
dictionary.TryGetValue(key, ...
Save ArrayList to SharedPreferences
I have an ArrayList with custom objects. Each custom object contains a variety of strings and numbers. I need the array to stick around even if the user leaves the activity and then wants to come back at a later time, however I don't need the array available after the application has been closed c...
Any reason to prefer getClass() over instanceof when generating .equals()?
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edited Feb 27 '09 at 23:26
answered Feb 27 '09 at 21:11
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How do you crash a JVM?
...interviewee, "How do you crash a JVM?" I thought that you could do so by writing an infinite for-loop that would eventually use up all the memory.
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Get the subdomain from a URL
...is the TLD.
So the question remains more complex than at first blush, and it depends on how each TLD is managed. You'll need a database of all the TLDs that include their particular partitioning, and what counts as a second level domain and a subdomain. There aren't too many TLDs, though, so the ...