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What did MongoDB not being ACID compliant before v4 really mean?
...to remove an item from inventory and add it to someone's order at the same time - you can't. Unless those two things - inventory and orders - exist in the same document (which they probably do not).
I encountered this very same issue in an application I am working on and had two possible solutions...
How to view method information in Android Studio?
...e Javadoc.
You can pin the window and make the documentation appear every time you select a method with your mouse though.
Android Studio 1.0: You have to hold CTRL if you want to get hold of documentation window for e.g. scrolling documentation otherwise as you move your mouse away from method...
How can I list ALL DNS records?
... their cache, and others restricted it to certain record types. In modern times (2016+), most providers have either disabled ANY (or give it a useless answer) or have plans to do so, as it is the common driver for many amplification attacks.
– Nick Bastin
Oct ...
How to activate virtualenv?
...
An alternative to typing 'source' all the time is to use a '.': $ . venv/bin/activate
– karwag
Dec 25 '15 at 16:44
...
What does template mean?
...d int x = N;
In fact, we can create algorithms which evaluate at compile time (from Wikipedia):
template <int N>
struct Factorial
{
enum { value = N * Factorial<N - 1>::value };
};
template <>
struct Factorial<0>
{
enum { value = 1 };
};
// Factorial<4>:...
Convert UTC date time to local date time
From the server I get a datetime variable in this format: 6/29/2011 4:52:48 PM and it is in UTC time. I want to convert it to the current user’s browser time using JavaScript.
...
Update Git submodule to latest commit on origin
... initially
git submodule add ssh://bla submodule_dir
git submodule init
# Time passes, submodule upstream is updated
# and you now want to update
# Change to the submodule directory
cd submodule_dir
# Checkout desired branch
git checkout master
# Update
git pull
# Get back to your project root
...
Convert timestamp to date in MySQL query
I want to convert a timestamp in MySQL to a date.
10 Answers
10
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Image Processing: Algorithm Improvement for 'Coca-Cola Can' Recognition
... few hundred ms for SIFT, SURF is bit faster, but it not suitable for real-time applications. ORB uses FAST which is weaker regarding rotation invariance.
The original papers
SURF: Speeded Up Robust Features
Distinctive Image Features
from Scale-Invariant Keypoints
ORB: an efficient alternative to ...
How to compare type of an object in Python?
...st, avoid all type comparisons. They're very, very rarely necessary. Sometimes, they help to check parameter types in a function -- even that's rare. Wrong type data will raise an exception, and that's all you'll ever need.
All of the basic conversion functions will map as equal to the type func...