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How to view revision history for Mercurial file?
...seHg:
Windows users can use Windows Explorer and view the revision history by right-clicking on the file.
For Linux users, you can do it within TortoiseHg but it took me a while to figure out how. You need to right-click on the desired file and select "File History". However, for some mysterious re...
Make a program run slowly
Is there any way to run a C++ program slower by changing any OS parameters in Linux? In this way I would like to simulate what will happen if that particular program happens to run on a real slower machine.
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Execute raw SQL using Doctrine 2
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I got it to work by doing this, assuming you are using PDO.
//Place query here, let's say you want all the users that have blue as their favorite color
$sql = "SELECT name FROM user WHERE favorite_color = :color";
//set parameters
//you ma...
Android emulator failed to allocate memory 8
...es:
Had the same problem with the built-in WXGA800 skin. I got it working by editing the virtual device setup to:
Target 4.0.3 API 15 / 4.1.0 API 16
SD-card 300MiB
Resolution 1280 x 800 (set manually -not the built-in ones)
Device ram size 1024MB (with MB added to the number)
Abstracted LCD 160
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A migration to add unique constraint to a combination of columns
... the constraint. A uniqueness constraint on only some rows can be enforced by creating a partial index. So IMHO there's no need to drop to raw SQL when the outcome will be basically the same as using the add_index method. ;)
– Rafał Cieślak
Mar 23 '15 at 10:...
Unicode (UTF-8) reading and writing to files in Python
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In the notation
u'Capit\xe1n\n'
the "\xe1" represents just one byte. "\x" tells you that "e1" is in hexadecimal.
When you write
Capit\xc3\xa1n
into your file you have "\xc3" in it. Those are 4 bytes and in your code you read them all. You can see this when you display them:
>>&...
What are the complexity guarantees of the standard containers?
...amortized)
v.insert(iterator, value) Insert value at the position indexed by iterator. O(n)
v.pop_back() Remove value from end. O(1)
v.assign(begin, end) Clear the container and copy in the elements from begin to end. O(n...
Using Server.MapPath() inside a static field in ASP.NET MVC
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This function gave me an error as the result returbed by HostingEnvironment.MapPath is not the same as Server.MapPath, the latter returns an absolute url not a relative url
– John
Jun 25 '14 at 13:16
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How to Copy Contents of One Canvas to Another Canvas Locally
...a HTMLImageElement, HTMLVideoElement, or a HTMLCanvasElement. As mentioned by Dave in a comment below this answer, you cannot use a canvas drawing context as your source. If you have a canvas drawing context instead of the canvas element it was created from, there is a reference to the original canv...
Why do objects of the same class have access to each other's private data?
...ions with my colleagues and here is the summary of our discussion:
This is by design. It doesn't mean this design is totally reasonable for all cases, but there must be some considerations why per class private is chosen. The possible reasons we could think of include:
First of all, the cost of per...