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mongodb find by multiple array items
...r you're trying to find documents where words contains both elements (text and here) using $all:
db.things.find({ words: { $all: ["text", "here"] }});
or either of them (text or here) using $in:
db.things.find({ words: { $in: ["text", "here"] }});
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What exactly does Perl's “bless” do?
I understand one uses the "bless" keyword in Perl inside a class's "new" method:
8 Answers
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Change SQLite database mode to read-write
...atabase open at the same time (see the FAQ).
There is a plugin to compress and encrypt the database. It doesn't allow to modify the DB.
Lastly, another FAQ says: "Make sure that the directory containing the database file is also writable to the user executing the CGI script." I think this is because...
Adding a legend to PyPlot in Matplotlib in the simplest manner possible
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Add a label= to each of your plot() calls, and then call legend(loc='upper left').
Consider this sample (tested with Python 3.8.0):
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 20, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x, y1, "-b", ...
What is the type of lambda when deduced with “auto” in C++11?
...o a functor. Anything inside the [] are turned into constructor parameters and members of the functor object, and the parameters inside () are turned into parameters for the functor's operator().
A lambda which captures no variables (nothing inside the []'s) can be converted into a function pointer...
ASP.NET MVC ActionLink and post method
Can anyone tell me how can I submit values to Controller using ActionLink and POST method?
I don't want to use buttons.
I guess it has something with jquery.
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What is CMake equivalent of 'configure --prefix=DIR && make all install '?
....cmake
Finally, you can specify the install prefix at configure-time, and then build and install in one step as follows:
$ cd build
$ cmake -DCMAKE_INSTALL_PREFIX:PATH=/path/to/install /path/to/src
$ cmake --build . --target install
You would either add --config Release to the third command ...
How to concatenate two strings to build a complete path
... a directory. Then I want to append some strings at the end of this string and build a path to some subdirectories.
For example assume user enters an string like this:
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How can I put a database under git (version control)?
I'm doing a web app, and I need to make a branch for some major changes, the thing is, these changes require changes to the database schema, so I'd like to put the entire database under git as well.
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What can I use for good quality code coverage for C#/.NET? [closed]
.... It will allow you to easily right-click on your unit test class library, and hit Test With→Coverage, and it will pull up the report.
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edited Jun 14 '19 at 20:35
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