大约有 40,000 项符合查询结果(耗时:0.0699秒) [XML]

https://stackoverflow.com/ques... 

When would you use .git/info/exclude instead of .gitignore to exclude files?

...gnore rules, unlike .git/info/exclude. So, .gitignore is available across all clones of the repository. Therefore, in large teams all people are ignoring the same kind of files Example *.db, *.log. And you can have more specific ignore rules because of multiple .gitignore. .git/info/exclude is av...
https://stackoverflow.com/ques... 

Fastest Way to Find Distance Between Two Lat/Long Points

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

How to make lists contain only distinct element in Python? [duplicate]

...ving return list(_f(seq, idfun)) def _f(seq, idfun=None): ''' Originally proposed by Andrew Dalke ''' seen = set() if idfun is None: for x in seq: if x not in seen: seen.add(x) yield x else: for x in seq: x = idfun(x) if x not in seen: s...
https://stackoverflow.com/ques... 

Ruby on Rails form_for select field with class

I am beating my head against the wall on this one. I want to make a simple select tag using the f.select tag but nothing I do works. I put an example below: ...
https://stackoverflow.com/ques... 

What is an ORM, how does it work, and how should I use one? [closed]

... case with a pseudo language: You have a book class, you want to retrieve all the books of which the author is "Linus". Manually, you would do something like that: book_list = new List(); sql = "SELECT book FROM library WHERE author = 'Linus'"; data = query(sql); // I over simplify ... while (row ...
https://stackoverflow.com/ques... 

How to check null objects in jQuery

...em to have enough reputation to vote down the answer...) Wolf wrote: Calling length property on undefined or a null object will cause IE and webkit browsers to fail! Instead try this: // NOTE!! THE FOLLOWING IS WRONG; DO NOT USE! -- EleotleCram if($("#something") !== null){ // do ...
https://stackoverflow.com/ques... 

How do I add options to a DropDownList using jQuery?

...orting it. What we can do is, create a new select element and then append all options. Once loop is finished, append it to actual DOM object. var myOptions = { val1 : 'text1', val2 : 'text2' }; var _select = $('<select>'); $.each(myOptions, function(val, text) { _select.append( ...
https://stackoverflow.com/ques... 

Detect blocked popup in Chrome

...code I use for cross-browser detection, without the Chrome part. function _hasPopupBlocker(poppedWindow) { var result = false; try { if (typeof poppedWindow == 'undefined') { // Safari with popup blocker... leaves the popup window handle undefined result = t...
https://stackoverflow.com/ques... 

Entity Framework: table without primary key

... Changing the code to satisfy EF is a workaround in itself. Not all tables need a primary key nor they should be forced to. E.g. you've a Topic and it has 0 or many keywords. The keywords table can have a parent topic id and a corresponding keyword. TO say that I need to remodel my DB bec...
https://stackoverflow.com/ques... 

What are the “standard unambiguous date” formats for string-to-date conversion in R?

...te (+1). However, the error message "standard unambiguous format" is ironically ambiguous, to which the 23 previous questions attest. A more direct error message like, "format not recognized, see documentation" might improve user experience. Also, I don't believe "01/01/2000" is ISO-8601 ("2000-01-0...