大约有 47,000 项符合查询结果（耗时：0.0899秒） [XML]
How do I find out which keystore was used to sign an app?
I have an app which is signed and several keystore files. I'd like to update the app, so I need to find out which one of keys was used.
...
Why should I care that Java doesn't have reified generics?
This came up as a question I asked in an interview recently as something the candidate wished to see added to the Java language. It's commonly-identified as a pain that Java doesn't have reified generics but, when pushed, the candidate couldn't actually tell me the sort of things that he could hav...
Returning unique_ptr from functions
unique_ptr<T> does not allow copy construction, instead it supports move semantics. Yet, I can return a unique_ptr<T> from a function and assign the returned value to a variable.
...
How to check command line parameter in “.bat” file?
My OS is Windows Vista. I need to have a ".bat" file where I need to check if user enters any command-line parameter or not. If does then if the parameter equals to -b then I will do something otherwise I will flag "Invalid input". If user does not enter any command-line parameter then I will d...
How to make HTML table cell editable?
I'd like to make some cells of html table editable, simply double click a cell, input some text and the changes can be sent to server. I don't want to use some toolkits like dojo data grid. Because it provides some other features. Would you provide me some code snippet or advices on how to implement...
Method chaining - why is it a good practice, or not?
Method chaining is the practice of object methods returning the object itself in order for the result to be called for another method. Like this:
...
How to Store Historical Data
Some co-workers and I got into a debate on the best way to store historical data. Currently, for some systems, I use a separate table to store historical data, and I keep an original table for the current, active record. So, let's say I have table FOO. Under my system, all active records will go ...
How do you handle multiple submit buttons in ASP.NET MVC Framework?
Is there some easy way to handle multiple submit buttons from the same form? For example:
35 Answers
...
How to fix the Hibernate “object references an unsaved transient instance - save the transient insta
I receive following error when I save the object using Hibernate
30 Answers
30
...
MySQL: Large VARCHAR vs. TEXT?
I've got a messages table in MySQL which records messages between users. Apart from the typical ids and message types (all integer types) I need to save the actual message text as either VARCHAR or TEXT. I'm setting a front-end limit of 3000 characters which means the messages would never be inserte...