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Search and replace a line in a file in Python
...
I guess something like this should do it. It basically writes the content to a new file and replaces the old file with the new file:
from tempfile import mkstemp
from shutil import move, copymode
from os import fdopen, remove
def replace(file_path, pattern, subst):
#Cr...
std::function vs template
...buggy program to your customer.
Moreover, as you correctly pointed out, calls to template functions are resolved statically (i.e. at compile time), so the compiler has all the necessary information to optimize and possibly inline the code (which would not be possible if the call were performed thr...
Can git undo a checkout of unstaged files
I accidentially discard my changes on files in my local working tree via git checkout. The files aren't staged at this time. Is it posible to "undo" this checkout?
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Align labels in form next to input
...technology has made for what I think is a better solution. CSS Grid Layout allows us to structure a more elegant solution.
The CSS below provides a 2-column "settings" structure, where the first column is expected to be a right-aligned label, followed by some content in the second column. More comp...
Django - what is the difference between render(), render_to_response() and direct_to_template()?
...and spanking new shortcut for render_to_response in 1.3 that will automatically use RequestContext that I will most definitely be using from now on.
2020 EDIT: It should be noted that render_to_response() was removed in Django 3.0
https://docs.djangoproject.com/en/1.8/topics/http/shortcuts/#rend...
How to export a Vagrant virtual machine to transfer it
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You have two ways to do this, I'll call it dirty way and clean way:
1. The dirty way
Create a box from your current virtual environment, using vagrant package command:
http://docs.vagrantup.com/v2/cli/package.html
Then copy the box to the other pc, add it u...
Calculate MD5 checksum for a file
... {
return md5.ComputeHash(stream);
}
}
(I believe that actually the MD5 implementation used doesn't need to be disposed, but I'd probably still do so anyway.)
How you compare the results afterwards is up to you; you can convert the byte array to base64 for example, or compare the by...
Why malloc+memset is slower than calloc?
It's known that calloc is different than malloc in that it initializes the memory allocated. With calloc , the memory is set to zero. With malloc , the memory is not cleared.
...
How to comment out a block of code in Python [duplicate]
...s support a mechanism to do the block-commenting-with-pound-signs automatically for you. For example, in IDLE on my machine, it's Alt+3 and Alt+4.
Don't use triple-quotes; as you discovered, this is for documentation strings not block comments, although it has a similar effect. If you're just comme...
Eclipse JPA Project Change Event Handler (waiting)
...4-0229) yet and because I don't need JPT/DALI in my eclipse I ended up manually removing the org.eclipse.jpt features and plugins.
What I did was:
1.) exit eclipse
2.) go to my eclipse install directory
cd eclipse
and execute these steps:
*nix:
mkdir disabled
mkdir disabled/features disable...