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How should one use std::optional?
...
The simplest example I can think of:
std::optional<int> try_parse_int(std::string s)
{
//try to parse an int from the given string,
//and return "nothing" if you fail
}
The same thing might be accomplished with a reference argument instead (as in the following signature), b...
Removing path and extension from filename in powershell
...ng results.
strTestPath = C:\Users\DAG\Documents\Articles_2018\NTFS_File_Times_in_CMD\PathStringInfo.ps1
GetDirectoryName = C:\Users\DAG\Documents\Articles_2018\NTFS_File_Times_in_CMD
GetFileName = PathStringInfo.ps1
GetExtension = .ps1
Get...
Can an enum class be converted to the underlying type?
...
I think you can use std::underlying_type to know the underlying type, and then use cast:
#include <type_traits> //for std::underlying_type
typedef std::underlying_type<my_fields>::type utype;
utype a = static_cast<utype>(my_fields::field);...
Programmatically Determine a Duration of a Locked Workstation?
...SessionSwitch += new Microsoft.Win32.SessionSwitchEventHandler(SystemEvents_SessionSwitch);
void SystemEvents_SessionSwitch(object sender, Microsoft.Win32.SessionSwitchEventArgs e)
{
if (e.Reason == SessionSwitchReason.SessionLock)
{
//I left my desk
}
else if (e.Reason == ...
How to programmatically set drawableLeft on Android button?
...he button:
val drawable = ContextCompat.getDrawable(context, R.drawable.ic_favorite_white_16dp)
button.setCompoundDrawablesWithIntrinsicBounds(drawable, null, null, null)
.
• Important Point in Using Android Vector Drawable
When you are using an android vector drawable and want to have backwa...
Change Twitter Bootstrap Tooltip content on click
....
Another way (see @lukmdo comment below):
$(element).attr('title', 'NEW_TITLE')
.tooltip('fixTitle')
.tooltip('show');
share
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WinDbg基础资料（日本語） - IT优秀资料 - 清泛网 - 专注C/C++及内核技术
... Commands
参考資料:
http://www.windbg.info/download/doc/pdf/WinDbg_A_to_Z_color_JP.pdf
①PDB設定
.sympath
.sympath SRV*c:\symbols*http://msdl.microsoft.com/download/symbols;c:\Symbols\mydll
環境変数:
_NT_SYMBOL_PATH
SRV*C:\Symbols*http://msdl.microsoft.com/download/symbol...
Mimicking sets in JavaScript?
...arrayLikeObject) // adds anything that a subclass returns true on _isPseudoArray()
// s.remove(key) // removes a key from the Set
// s.remove(["a", "b"]); // removes all keys in the passed in array
// s.remove("a", "b", ["first", "second"]); // removes all keys...
UIButton Long Press Event
...s = UILongPressGestureRecognizer(target: self, action: #selector(longPress(_:)))
self.button.addGestureRecognizer(longPress)
}
func longPress(gesture: UILongPressGestureRecognizer) {
if gesture.state == UIGestureRecognizerState.began {
print("Long Press"...
Sending files using POST with HttpURLConnection
...nn.connect();
if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
return readStream(conn.getInputStream());
}
} catch (Exception e) {
Log.e(TAG, "multipart post error " + e + "(" + urlString + ")");
}
return null;
}
private static Str...