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How can you encode a string to Base64 in JavaScript?
...
From here:
/**
*
* Base64 encode / decode
* http://www.webtoolkit.info/
*
**/
var Base64 = {
// private property
_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
// public method for encoding
encode : function (input) {
var output = "";
var chr1, chr2...
常用Linux命令详解（持续更新） - 更多技术 - 清泛网 - 专注C/C++及内核技术
....txt文件之后:
[root@KEDACOM temp]# cat file >> file.txt
将new.txt和info.txt合并成readme.txt文件:
[root@KEDACOM temp]# cat file file.txt > readme.txt
>> 表示在文件末尾追加内容 > 表示直接覆盖原文件内容
2.创建、编辑文本操作的touch、vi命令
...
Get MIME type from filename extension
...
+1 for adding new relevant info. Unfortunately the MS implementation, which is available in .NET 4.5, only has 195 mappings, has no way to add more, and is not configurable. My listing above has 560 mappings. Oddly, the MS listing is missing extreme...
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar
...ure out what table view it will query and which applicable FRC to pull the information from. The FRC delegate methods must also figure out which tableView to update.
It is surprising how much of this is boilerplate code.
Relevant bits of the header file:
@interface BlahViewController : UITableVi...
How do function pointers in C work?
...
Thanks for the great info. Could you add some insight on where function pointers are used or happen to be particularly useful?
– Rich.Carpenter
May 8 '09 at 15:55
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How to implement a rule engine?
...other containing a map from the property names of the User type to PropertyInfos used to invoke the property getter (if public).
You pass the User instance, and the three values from your table to the static Apply method.
class User
{
public int Age { get; set; }
public string UserName { ge...
What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
...fter the comments discussion, and edits, I thought I'd throw out some more information about the benefits and downsides to specific implementations, and why you might choose one over the other, given your situation.
GMTL -
Benefits: Simple API, specifically designed for graphics engines. Include...
How to make an OpenGL rendering context with transparent background?
...
void *bmp_cnt(NULL);
int cxDIB(0);
int cyDIB(0);
BITMAPINFOHEADER BIH;
BOOL initSC()
{
glEnable(GL_ALPHA_TEST);
glEnable(GL_DEPTH_TEST);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
...
Is it possible to print a variable's type in standard C++?
...ferences to the input type.
#include <type_traits>
#include <typeinfo>
#ifndef _MSC_VER
# include <cxxabi.h>
#endif
#include <memory>
#include <string>
#include <cstdlib>
template <class T>
std::string
type_name()
{
typedef typename std::remove_refer...
Understanding slice notation
...the start and the stop are included when present in the index. For further info see the Pandas indexing documentation.
– vreyespue
May 29 '19 at 12:54
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