大约有 16,000 项符合查询结果（耗时：0.0252秒） [XML]
How to len(generator()) [duplicate]
Python generators are very useful. They have advantages over functions that return lists. However, you could len(list_returning_function()) . Is there a way to len(generator_function()) ?
...
How do I get jQuery to select elements with a . (period) in their ID?
Given the following classes and controller action method:
8 Answers
8
...
htmlentities() vs. htmlspecialchars()
... documentation for htmlspecialchars:
Certain characters have special significance in HTML, and should be represented by HTML entities if they are to preserve their meanings. This function returns a string with some of these conversions made; the translations made are those most useful for everyd...
How to do Base64 encoding in node.js?
Does node.js have built-in base64 encoding yet?
7 Answers
7
...
How to create an array from a CSV file using PHP and the fgetcsv function
Can someone kindly provide a code to create an array from a CSV file using fgetcsv?
14 Answers
...
How to recover MySQL database from .myd, .myi, .frm files
...
If these are MyISAM tables, then plopping the .FRM, .MYD, and .MYI files into a database directory (e.g., /var/lib/mysql/dbname) will make that table available. It doesn't have to be the same database as they came from, the same server, the same MySQL version, or t...
What does the number in parentheses shown after Unix command names in manpages mean?
...
It's the section that the man page for the command is assigned to.
These are split as
General commands
System calls
C library functions
Special files (usually devices, those found in /dev) and drivers
File formats and conventions
Games and screensavers
...
Determine what attributes were changed in Rails after_save callback?
I'm setting up an after_save callback in my model observer to send a notification only if the model's published attribute was changed from false to true. Since methods such as changed? are only useful before the model is saved, the way I'm currently (and unsuccessfully) trying to do so is as fol...
How to safely call an async method in C# without await
...
If you want to get the exception "asynchronously", you could do:
MyAsyncMethod().
ContinueWith(t => Console.WriteLine(t.Exception),
TaskContinuationOptions.OnlyOnFaulted);
This will allow you to deal with an exception on a...
Pad a string with leading zeros so it's 3 characters long in SQL Server 2008
I have a string that is up to 3 characters long when it's first created in SQL Server 2008 R2.
17 Answers
...