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Read file from line 2 or skip header row
...he header information (in this example we simply tokenize the header lines based on the comma and return it as a list but there's room to do much more).
def __readheader(filehandle, numberheaderlines=1):
"""Reads the specified number of lines and returns the comma-delimited
strings on eac...
How to get the original value of an attribute in Rails
...ue that an ActiveRecord attribute (=the value that was loaded from the database)?
4 Answers
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Wrap a delegate in an IEqualityComparer
...g it). Clearly this may pose too severe a restriction, so you could make a base class without the constraint and a derived class with it.
Here's what the resulting code might look like:
public class KeyEqualityComparer<T, TKey> : IEqualityComparer<T>
{
protected readonly Func<T...
Is there a way to remove the separator line from a UITableView?
...
64
You can do this in the storyboard / xib editor as well. Just set Seperator to none.
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Can I query MongoDB ObjectId by date?
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Popping Timestamps into ObjectIds covers queries based on dates embedded in the ObjectId in great detail.
Briefly in JavaScript code:
/* This function returns an ObjectId embedded with a given datetime */
/* Accepts both Date object and string input */
function objectIdWit...
Cannot kill Python script with Ctrl-C
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Is it possible to declare two variables of different types in a for loop?
...e
C++14: You can do the same as C++11 (below) with the addition of type-based std::get. So instead of std::get<0>(t) in the below example, you can have std::get<int>(t).
C++11: std::make_pair allows you to do this, as well as std::make_tuple for more than two objects.
for (auto p ...
What algorithm gives suggestions in a spell checker?
...i think it's the right result. Becasue what we expect is the closest word, based on the spelling of input word. If you are still in doubt, think this way --- suppose there is a rare word which user spelled correctly. Now its distance is 0 but frequency very low. Now in suggestions, we should list th...
How to prevent form resubmission when page is refreshed (F5 / CTRL+R)
...ng redirects) you can hash some of the request parameters to make a string based on the content and then check that you haven't sent it already.
//create digest of the form submission:
$messageIdent = md5($_POST['name'] . $_POST['email'] . $_POST['phone'] . $_POST['comment']);
//and check it ...
What is the meaning of polyfills in HTML5?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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