大约有 41,000 项符合查询结果(耗时:0.0532秒) [XML]

https://stackoverflow.com/ques... 

How can I connect to MySQL in Python 3 on Windows?

...k', user='root', passwd=None, db='mysql') cur = conn.cursor() cur.execute("SELECT Host,User FROM user") for r in cur: print(r) cur.close() conn.close() share | improve this answer | ...
https://stackoverflow.com/ques... 

d3 axis labeling

...e charts. You are given the building blocks, an axis component, data join, selection and SVG. It's your job to put them together to form a chart! If you want a conventional chart, i.e. a pair of axes, axis labels, a chart title and a plot area, why not have a look at d3fc? it is an open source set ...
https://stackoverflow.com/ques... 

Add CSS or JavaScript files to layout head from views or partial views

...where IncludesCurrentBrowser(s.ServeTo) select s.Url); } return returnVal; } internal IEnumerable<string> UsedStyles() { SetOrder(); var returnVal = new List<string>(); ...
https://stackoverflow.com/ques... 

Aggregate / summarize multiple variables per group (e.g. sum, mean)

...-date), sum) # summarising a specific set of non-grouping variables using select_helpers # see ?select_helpers for more options df2 <- df1 %>% group_by(year, month) %>% summarise_at(vars(starts_with('x')), sum) df2 <- df1 %>% group_by(year, month) %>% summarise_at(vars(matches('.*...
https://stackoverflow.com/ques... 

Are there any side effects of returning from inside a using() statement?

...nCreated descending where t.Id == singleId select t).SingleOrDefault(); } } Indeed, I might even be tempted to use dot notation, and put the Where condition within the SingleOrDefault: public static Transaction GetMostRecentTransaction(int singleId) { using...
https://stackoverflow.com/ques... 

An error occurred while signing: SignTool.exe not found

...a program, right-clicking on Microsoft Visual Studio Professional 2015 and selecting Change. A Visual Studio dialog will open up. Select Modify from the set of buttons at the bottom and the above dialog will appear. share ...
https://stackoverflow.com/ques... 

Optimize Font Awesome for only used classes

...e; done You then use this with FontSquirrel in the expert mode where you select custom subsetting: http://www.fontsquirrel.com/tools/webfont-generator In Unicode ranges enter the comma separated values from above. Then to remove unnecessary stuff from the CSS: egrep "@fa-var-($fa_icons);" less/...
https://stackoverflow.com/ques... 

How to get a list of properties with a given attribute?

...(typeof(MyAttribute), true) where attr.Length == 1 select new { Property = p, Attribute = attr.First() as MyAttribute}; share | improve this answer | ...
https://stackoverflow.com/ques... 

How can I filter lines on load in Pandas read_csv function?

... read_csv. However, read_csv returns a DataFrame, which can be filtered by selecting rows by boolean vector df[bool_vec]: filtered = df[(df['timestamp'] > targettime)] This is selecting all rows in df (assuming df is any DataFrame, such as the result of a read_csv call, that at least contains ...
https://stackoverflow.com/ques... 

How to add a right button to a UINavigationController?

... initWithTitle:@"Show" style:UIBarButtonItemStylePlain target:self action:@selector(refreshPropertyList:)]; self.navigationItem.rightBarButtonItem = anotherButton; // exclude the following in ARC projects... [anotherButton release]; } As to why it isn't working currently, I can't s...