大约有 47,000 项符合查询结果（耗时：0.0534秒） [XML]
Insert line after first match using sed
...t inserting a choice line of text after the first line matching a specific string using the sed command. I have ...
8 An...
Why is the default value of the string type null instead of an empty string?
It's quite annoying to test all my strings for null before I can safely apply methods like ToUpper() , StartWith() etc...
...
Should IBOutlets be strong or weak under ARC?
... Is there such a thing as a redundant retain? If there's an extra retain, that will cause it to not be counted properly, and therefore won't be freed as soon as it could be since there's an extra retain on its retain count.
– karlbecker_com
Feb 2...
What are the basic rules and idioms for operator overloading?
...oo {
public:
// Overloaded call operator
int operator()(const std::string& y) {
// ...
}
};
Usage:
foo f;
int a = f("hello");
Throughout the C++ standard library, function objects are always copied. Your own function objects should therefore be cheap to copy. If a functi...
How to unzip a file using the command line? [closed]
...zip
Complete set of options for the jar tool available here.
Examples:
Extract jar file
jar x[v]f jarfile [inputfiles] [-Joption]
jar x[v] [inputfiles] [-Joption]
share
|
improve this ...
Change URL parameters
...t that weird stuff out of your URL. Or, in other words, "change your query-string to use only valid UTF-8 characters". :) F8 alone isn't a valid UTF-8 character.
– Matthew Flaschen
Jul 7 '09 at 9:51
...
Run Command Prompt Commands
...
this is all you have to do run shell commands from C#
string strCmdText;
strCmdText= "/C copy /b Image1.jpg + Archive.rar Image2.jpg";
System.Diagnostics.Process.Start("CMD.exe",strCmdText);
EDIT:
This is to hide the cmd window.
System.Diagnostics.Process process = new Syste...
RESTful Authentication
...as the signing token. Signing should occur before URL encoding the
query string.
This technique is perhaps the more compatible with a Stateless architecture, and can also be implemented with a light session management (using in-memory sessions instead of DB persistence).
For instance, here is a...
How to remove the hash from window.location (URL) with JavaScript without page refresh?
...
Use this line to make sure you don't lose the query string: history.pushState("", document.title, window.location.pathname + window.location.search);
– Phil Kulak
Mar 13 '12 at 15:56
...
vector vs. list in STL
... It doesn't even have to be an UglyBlob -- even an objects with just a few string members can easily be prohibitively expensive to copy, so the reallocations will cost. Also: Don't neglect the space overhead the exponential growth of a vector holding objects of a few dozen bytes in size can cause (i...