大约有 47,000 项符合查询结果(耗时:0.0623秒) [XML]

https://stackoverflow.com/ques... 

How to sort a dataFrame in python pandas by two or more columns?

Suppose I have a dataframe with columns a , b and c , I want to sort the dataframe by column b in ascending order, and by column c in descending order, how do I do this? ...
https://stackoverflow.com/ques... 

Enable bundling and minification in debug mode in ASP.NET MVC 4

... App_Start folder). check http://www.asp.net/mvc/tutorials/mvc-4/bundling-and-minification for more info You could also change your web.config: <system.web> <compilation debug="false" /> </system.web> But this would disable debug mode entirely so I would recommend the firs...
https://stackoverflow.com/ques... 

Programmatically generate video or animated GIF in Python?

...d not using images2gif from visvis because it has problems with PIL/Pillow and is not actively maintained (I should know, because I am the author). Instead, please use imageio, which was developed to solve this problem and more, and is intended to stay. Quick and dirty solution: import imageio im...
https://stackoverflow.com/ques... 

How does facebook, gmail send the real time notification?

I have read some posts about this topic and the answers are comet, reverse ajax, http streaming, server push, etc. 5 Answer...
https://stackoverflow.com/ques... 

Case insensitive searching in Oracle

The default behaviour of LIKE and the other comparison operators, = etc is case-sensitive. 6 Answers ...
https://stackoverflow.com/ques... 

PHP Difference between array() and []

I'm writing a PHP app and I want to make sure it will work with no errors. 5 Answers 5...
https://stackoverflow.com/ques... 

How to test if a string is basically an integer in quotes using Ruby

...!!(str =~ /^[-+]?[0-9]+$/) would do that. Then you could add it to String and leave out the argument, using "self" instead of "str", and then you could change the name to "is_i?" ... – janm Aug 5 '09 at 22:16 ...
https://stackoverflow.com/ques... 

Fastest Way to Find Distance Between Two Lat/Long Points

...have just under a million locations in a mysql database all with longitude and latitude information. 15 Answers ...
https://stackoverflow.com/ques... 

Java - escape string to prevent SQL injection

I'm trying to put some anti sql injection in place in java and am finding it very difficult to work with the the "replaceAll" string function. Ultimately I need a function that will convert any existing \ to \\ , any " to \" , any ' to \' , and any \n to \\n so that when the string is e...
https://stackoverflow.com/ques... 

How can I get the current user's username in Bash?

... On the command line, enter whoami or echo "$USER" To save these values to a variable, do myvariable=$(whoami) or myvariable=$USER Of course, you don't need to make a variable since that is what the $USER variable is for. ...