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Amazon S3 Change file download name
...quest
{
BucketName = BucketName,
Key = Key,
Expires = DateTime.Now.AddMinutes(25)
};
request.ResponseHeaderOverrides.ContentDisposition = $"attachment; filename={FileName}";
var url = s3Client.GetPreSignedURL(request);
...
Meaning of 'const' last in a function declaration of a class?
...can change the instance members, which you cannot do in the const version. If you change the method declaration in the above example to the code below you will get some errors.
void Foo()
{
counter++; //this works
std::cout << "Foo" << std::endl;
}
v...
How to convert a string to utf-8 in Python
...icode_string)
(<type 'str'>, <type 'unicode'>)
^ This is the difference between a byte string (plain_string) and a unicode string.
>>> s = "Hello!"
>>> u = unicode(s, "utf-8")
^ Converting to unicode and specifying the encoding.
In Python 3
All strings are unicode. Th...
jQuery or CSS selector to select all IDs that start with some string [duplicate]
...ector (as a jQuery selector, or as a CSS3 selector):
div[id^="player_"]
If you are able to modify that HTML, however, you should add a class to your player divs then target that class. You'll lose the additional specificity offered by ID selectors anyway, as attribute selectors share the same spe...
c++ 代码调用nsis安装包实现静默安装 - 脚本技术 - 清泛IT社区，为创新赋能！
...sp; sei.nShow = SW_SHOWNORMAL;
if (!ShellExecuteEx(&sei)) {
DWORD dwStatus = GetLastError();
if (dwStatus == ERROR_CANC...
App Inventor 2 屏幕适配教程 - 多分辨率适配方案 · App Inventor 2 中文网
... 值
说明
ScreenOrientation
unspecified/landscape/portrait
屏幕方向
ActionBar
true/false
是否显示标题栏
TitleVisible
true/false
标题是否可见
ShowStatusBar
tru...
Writing your own STL Container
...edef typename A::const_reference const_reference;
typedef typename A::difference_type difference_type;
typedef typename A::size_type size_type;
class iterator {
public:
typedef typename A::difference_type difference_type;
typedef typename A::value_type value_type;
...
Get a random item from a JavaScript array [duplicate]
...ar randomElement = items[Math.floor(Math.random()*items.length)] if (objResults[randomElement]){ objResults[randomElement]++ }else{ objResults[randomElement] = 1 } } console.log(objResults) The results are pretty randomized af...
How do I install an R package from source?
...
If you have the file locally, then use install.packages() and set the repos=NULL:
install.packages(path_to_file, repos = NULL, type="source")
Where path_to_file would represent the full path and file name:
On Windows i...
How do I call a dynamically-named method in Javascript?
... I googled it and found that global objects are part of the window object. Now it makes sense! Thank you. FYI I found a good page about it here devlicio.us/blogs/sergio_pereira/archive/2009/02/09/…
– Chris B
Jun 9 '09 at 12:45
...