大约有 45,000 项符合查询结果（耗时：0.0454秒） [XML]
How to trim a string in SQL Server before 2017?
...
SQL Server now has TRIM in the 2017 version. docs.microsoft.com/en-us/sql/t-sql/functions/trim-transact-sql
– goodeye
Jun 15 '17 at 19:23
...
mongoose vs mongodb (nodejs modules/extensions), which better? and why?
... In case anyone was wondering the documentation is pretty good now.
– Kevin Beal
Jan 18 '13 at 6:03
7
...
C++ performance challenge: integer to std::string conversion
...e important thing to do is to minimize the use of std::string. (Ironic, I know.) In Visual Studio, for example, most calls to methods of std::string are not inlined, even if you specify /Ob2 in compiler options. So even something as trivial as a call to std::string::clear(), which you might expect t...
How can you encode a string to Base64 in JavaScript?
...) accepts a “string” where each character represents an 8-bit byte – if you pass a string containing characters that can’t be represented in 8 bits, it will probably break. This isn’t a problem if you’re actually treating the string as a byte array, but if you’re trying to do something...
Python argparse: Make at least one argument required
...
if not (args.process or args.upload):
parser.error('No action requested, add -process or -upload')
share
|
improve thi...
Outputting data from unit test in python
If I'm writing unit tests in python (using the unittest module), is it possible to output data from a failed test, so I can examine it to help deduce what caused the error? I am aware of the ability to create a customized message, which can carry some information, but sometimes you might deal with m...
How to trigger a file download when clicking an HTML button or JavaScript
This is crazy but I don't know how to do this, and because of how common the words are, it's hard to find what I need on search engines. I'm thinking this should be an easy one to answer.
...
what is reverse() in Django
...rendered as:
<a href="/foo/">link which calls some_view</a>
Now say you want to do something similar in your views.py - e.g. you are handling some other url (not /foo/) in some other view (not some_view) and you want to redirect the user to /foo/ (often the case on successful form sub...
How to bind a List to a ComboBox?
...mber_CountryCombo
Box.ValueMember = "Name";
This is the code I am using now.
share
|
improve this answer
|
follow
|
...
Get keys from HashMap in Java
...
This is doable, at least in theory, if you know the index:
System.out.println(team1.keySet().toArray()[0]);
keySet() returns a set, so you convert the set to an array.
The problem, of course, is that a set doesn't promise to keep your order. If you only have one...