大约有 40,000 项符合查询结果（耗时：0.0543秒） [XML]
How to remove the last character from a string?
... use substring():
public String method(String str) {
if (str != null && str.length() > 0 && str.charAt(str.length() - 1) == 'x') {
str = str.substring(0, str.length() - 1);
}
return str;
}
...
Minimal web server using netcat
...00, for instance, it should show the result of a function ( date in the example below, but eventually it'll be a python or c program that yields some data).
My little netcat web server needs to be a while true loop in bash, possibly as simple as this:
...
How do I use cascade delete with SQL Server?
...o perform cascading delete in SQL Server when a record from T1 is deleted, all associated records in T2 also deleted.
8 An...
Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?
...tible<value_type,
_Pair&&>::value>::type>
std::pair<iterator, bool>
insert(_Pair&& __x)
{ return _M_t._M_insert_unique(std::forward<_Pair>(__x)); }
bits/unordered_map.h, lines 365-370
template&lt...
Is there a way to instantiate objects from a string holding their class name?
...lt;std::string, Base*(*)()> map_type;
map_type map;
map["DerivedA"] = &createInstance<DerivedA>;
map["DerivedB"] = &createInstance<DerivedB>;
And then you can do
return map[some_string]();
Getting a new instance. Another idea is to have the types register themself:
// ...
How can I get the client's IP address in ASP.NET MVC?
...
The simple answer is to use the HttpRequest.UserHostAddress property.
Example: From within a Controller:
using System;
using System.Web.Mvc;
namespace Mvc.Controllers
{
public class HomeController : ClientController
{
public ActionResult Index()
{
string ip =...
Why is my Git Submodule HEAD detached from master?
... update, by setting submodule.$name.update to merge or rebase.
Here's an example about how to config the default update behavior of submodule update in .gitmodule.
[submodule "bash/plugins/dircolors-solarized"]
path = bash/plugins/dircolors-solarized
url = https://github.com/seebi/dircolors-...
What is __future__ in Python used for and how/when to use it, and how it works
__future__ frequently appears in Python modules. I do not understand what __future__ is for and how/when to use it even after reading the Python's __future__ doc .
...
Difference between “git checkout ” and “git checkout -- ”
...his is not Git-specific, it's a general Unix command line convention. Normally you use it to clarify that an argument is a file name rather than an option, e.g.
rm -f # does nothing
rm -- -f # deletes a file named "-f"
git checkout1 also takes -- to mean that subsequent arguments are not ...
MySQL “Group By” and “Order By”
...is unnecessary, and second, $userID appears to be a variable directly from PHP, your code may be sql injection vulnerable if $userID is user-supplied and not forced to be an integer.
– velcrow
Apr 23 '13 at 18:09
...