大约有 40,000 项符合查询结果（耗时：0.0686秒） [XML]
Why would one use nested classes in C++?
... Node as other people may decide to use the class and that would hinder me from updating my class as anything exposed is part of the public API and must be maintained forever. By making the class private, I not only hide the implementation I am also saying this is mine and I may change it at any tim...
What's the best way to retry an AJAX request on failure using jQuery?
...'t get called on the retry. Here's my solution, which is heavily borrowed from @cjpak's answer here. In my case I want to retry when AWS's API Gateway responds with 502 error.
const RETRY_WAIT = [10 * 1000, 5 * 1000, 2 * 1000];
// This is what tells JQuery to retry $.ajax requests
// Ideas for...
Most underused data visualization [closed]
....
First, I would point you to a very nice tutorial on ggplot2 and ggobi from "Looking at Data" earlier this year. Beyond that I would just highlight one visualization from R, and two graphics packages (which are not as widely used as base graphics, lattice, or ggplot):
Heat Maps
I really like ...
What is a difference between
...tor uses the ? extends E form so it guarantees that when it fetches values from the collection, they will all be E or some subclass (i.e. it's compatible). The drainTo method is trying to put values into the collection, so the collection has to have an element type of E or a superclass.
As an exam...
Installing SciPy with pip
...://new.scipy.org/Wiki/Download
All is not lost, however; pip can install from Subversion (SVN), Git, Mercurial, and Bazaar repositories. SciPy uses SVN:
pip install svn+http://svn.scipy.org/svn/scipy/trunk/#egg=scipy
Update (12-2012):
pip install git+https://github.com/scipy/scipy.git
Since ...
Could not find stored procedure 'dbo.aspnet_CheckSchemaVersion'
...
Open visual studio command prompt from the Visual studio tools folder from the start menu
and type
aspnet_regsql
and follow the wizard to register the database for asp.net membership and role providers.
...
Can I mask an input text in a bat file?
...ord
The getpwd.vbs simply uses the password object to input the password from the user and then print it to standard output (the next paragraph will explain why that doesn't show up in the terminal).
The getpwd.cmd command script is a bit trickier but it basically works as follows.
The effect of...
Boolean operators && and ||
...o see if all or any of the comparisons are true, respectively. The results from these functions are sure to be length 1 so they are appropriate for use in if clauses, while the results from the vectorized comparison are not. (Though those results would be appropriate for use in ifelse.
One final d...
NumPy or Pandas: Keeping array type as integer while having a NaN value
...t to work with float series where possible, even when the series is upcast from int to float due to inclusion of NaN values. This enables vectorised NumPy-based calculations where, otherwise, Python-level loops would be processed.
The docs do suggest : "One possibility is to use dtype=object arrays...
Looping through array and removing items, without breaking for loop
... the next item in the iteration, since the indexing affects only the items from the current point to the end of the Array, and the next item in the iteration is lower than the current point.
share
|
...