大约有 47,000 项符合查询结果（耗时：0.0421秒） [XML]
Inline labels in Matplotlib
...below). This can be very fiddly, because I have to specify coordinates by hand, and, if I re-format the plot, I probably have to reposition the labels. Is there a way to automatically generate labels on curves in Matplotlib? Bonus points for being able to orient the text at an angle corresponding to...
How to find gaps in sequential numbering in mysql?
...lues were imported from another system. There is an auto-increment column, and there are no duplicate values, but there are missing values. For example, running this query:
...
Common MySQL fields and their appropriate data types
...g up a very small MySQL database that stores, first name, last name, email and phone number and am struggling to find the 'perfect' datatype for each field. I know there is no such thing as a perfect answer, but there must be some sort of common convention for commonly used fields such as these. For...
What is the GAC in .NET?
...le without worrying about conflicts. No more DLL Hell. Each architecture and version gets it's own place to live.
It also gets it own way to browse it in Explorer, so if you go to
C:\Windows\assembly
In windows explorer it lists all the DLLs.
But if you fire up cmd, you can see how it's ...
Specifying rails version to use when creating a new application
I have two versions of rails (2.1.0 and 2.2.2) installed in my computer.
7 Answers
7
...
Why are these numbers not equal?
...umbers can be represented exactly in IEEE floating point arithmetic (the standard that almost all computers use to represent decimal numbers and do math with them), you will not always get what you expected. This is especially true because some values which are simple, finite decimals (such as 0.1 a...
Is it possible to declare two variables of different types in a for loop?
...se a structured binding declaration. The syntax has been supported in gcc and clang for years (since gcc-7 and clang-4.0) (clang live example). This allows us to unpack a tuple like so:
for (auto [i, f, s] = std::tuple{1, 1.0, std::string{"ab"}}; i < N; ++i, f += 1.5) {
// ...
}
The above...
What are the options for storing hierarchical data in a relational database? [closed]
...in this thread suggested. Use an Adjacency List to maintain the hierarchy and use Nested Sets to query the hierarchy.
The problem up until now has been that the coversion method from an Adjacecy List to Nested Sets has been frightfully slow because most people use the extreme RBAR method known as ...
Fitting empirical distribution to theoretical ones with Scipy (Python)?
...
Distribution Fitting with Sum of Square Error (SSE)
This is an update and modification to Saullo's answer, that uses the full list of the current scipy.stats distributions and returns the distribution with the least SSE between the distribution's histogram and the data's histogram.
Example Fit...
How to find where gem files are installed
...PATHS are only used first one. Is that right?
– ironsand
Sep 28 '13 at 22:27
10
gem env for short...