大约有 47,000 项符合查询结果(耗时:0.0829秒) [XML]

https://stackoverflow.com/ques... 

Calculate business days

...tion in the comments that adds support for leap years. Enter the starting and ending dates, along with an array of any holidays that might be in between, and it returns the working days as an integer: <?php //The function returns the no. of business days between two dates and it skips the holid...
https://stackoverflow.com/ques... 

Ignoring time zones altogether in Rails and PostgreSQL

I'm dealing with dates and times in Rails and Postgres and running into this issue: 2 Answers ...
https://stackoverflow.com/ques... 

Getting error while sending email through Gmail SMTP - “Please log in via your web browser and then

... I know this is an older issue, but I recently had the same problem and was having issues resolving it, despite attempting the DisplayUnlockCaptcha fix. This is how I got it alive. Head over to Account Security Settings (https://www.google.com/settings/security/lesssecureapps) and enable "Ac...
https://stackoverflow.com/ques... 

Cluster analysis in R: determine the optimal number of clusters

..., calinski.best, "\n") # 5 clusters! Four. Determine the optimal model and number of clusters according to the Bayesian Information Criterion for expectation-maximization, initialized by hierarchical clustering for parameterized Gaussian mixture models # See http://www.jstatsoft.org/v18/i06/pap...
https://stackoverflow.com/ques... 

jQuery event handlers always execute in order they were bound - any way around this? [duplicate]

It can be anoying that jQuery event handlers always execute in the order they were bound. For example: 10 Answers ...
https://stackoverflow.com/ques... 

How to get image size (height & width) using JavaScript?

... You can programmatically get the image and check the dimensions using Javascript... const img = new Image(); img.onload = function() { alert(this.width + 'x' + this.height); } img.src = 'http://www.google.com/intl/en_ALL/images/logo.gif'; This can be u...
https://stackoverflow.com/ques... 

The 'json' native gem requires installed build tools

...on my windows 7 machine. Now I tried to install the JSON gem using the command, "gem install json" and got the following error. ...
https://stackoverflow.com/ques... 

Detect & Record Audio in Python

...ssing. The problem is that I need to determine when there is audio present and then record it, stop when it goes silent and then pass that file to the processing module. ...
https://stackoverflow.com/ques... 

How to split/partition a dataset into training and test datasets for, e.g., cross validation?

What is a good way to split a NumPy array randomly into training and testing/validation dataset? Something similar to the cvpartition or crossvalind functions in Matlab. ...
https://stackoverflow.com/ques... 

What is the difference between a .xib file and a .storyboard?

Can someone explain in simple words the difference between .xib and .storyboard? 6 Answers ...