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Linq to EntityFramework DateTime
...but rather than trying to add days to p.startdat (something that cannot be converted to a sql statement) why not do something that can be equated to sql:
var baselineDate = DateTime.Now.AddHours(-24);
something.Where(p => p.startdate >= baselineDate)
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How do I design a class in Python?
...one database. It internally would store a specific format but could easily convert to other formats when outputting (Postgres, MySQL, MongoDB).
Now let's think through the Database object. What does this hide and store? Well clearly it can't store the full contents of the database, since that is wh...
Get image data url in JavaScript?
...cation here.
If you have this JS loaded (prior to when it's needed), then converting to dataURL is as simple as:
examples
HTML
<img src="/yo.jpg" onload="console.log(this.toDataURL('image/jpeg'))">
JS
console.log(document.getElementById("someImgID").toDataURL());
GPU fingerprinting
I...
What is a race condition?
...x == 5)" and "y = x * 2" above,
// y will not be equal to 10.
}
The point being, y could be 10, or it could be anything, depending on whether another thread changed x in between the check and act. You have no real way of knowing.
In order to prevent race conditions from occurring, you would ty...
Write a program to find 100 largest numbers out of an array of 1 billion numbers
I recently attended an interview where I was asked "write a program to find 100 largest numbers out of an array of 1 billion numbers."
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Django migration strategy for renaming a model and relationship fields
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Thank you for this! I think that the key part is converting all foreign keys, in or out of the model to be renamed, to IntegerField. This worked perfectly for me, and has the added advantage that they get recreated with the correct name. Naturally I would advise reviewing a...
What is the difference between ndarray and array in numpy?
...is in C code, here in multiarray, but you can start looking at the ndarray interfaces here:
https://github.com/numpy/numpy/blob/master/numpy/core/numeric.py
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What's the fastest algorithm for sorting a linked list?
... you cannot do any better than O(N log N) in running time.
However, the interesting part is to investigate whether you can sort it in-place, stably, its worst-case behavior and so on.
Simon Tatham, of Putty fame, explains how to sort a linked list with merge sort. He concludes with the followin...
In JavaScript, is returning out of a switch statement considered a better practice than using break?
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@Queue You're correct in that the boolean should be converted to integer, but I'd do it this way: return [100,0][foo == "bar" & 1];
– ic3b3rg
Jan 24 '13 at 21:32
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What is the difference between `new Object()` and object literal notation?
...umber"
The object created using the above method (new Object(1)) would be converted to object type if a property is added to it.
var obj = new Object(1);
typeof obj // "number"
obj.a = 2;
typeof obj // "object"
If the object is a copy of a child class of object, we could add the property without ...