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What is the difference between user variables and system variables?
...tem ones by accident, bring up the Registry Editor, then go to HKLM\ControlSet002\Control\Session Manager\Environment (assuming your current control set is not ControlSet002). Then find the Path value and copy the data into the Path value of HKLM\CurrentControlSet\Control\Session Manager\Environment...
Better way to check variable for null or empty string?
...ty nor only white space
function IsNullOrEmptyString($str){
return (!isset($str) || trim($str) === '');
}
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How to get all enum values in Java?
...um object. So you need to either go via declaring class or better, via EnumSet.
– zeratul021
Apr 2 at 12:49
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Why is a div with “display: table-cell;” not affected by margin?
...d by Diego Quirós, the border-spacing property also accepts two values to set a different margin for the horizontal and vertical axes.
For example
.table {/*...*/border-spacing:3px 5px;} /* 3px horizontally, 5px vertically */
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How do I read text from the (windows) clipboard from python?
...d win32clipboard, which is part of pywin32.
Here is an example that first sets the clipboard data then gets it:
import win32clipboard
# set clipboard data
win32clipboard.OpenClipboard()
win32clipboard.EmptyClipboard()
win32clipboard.SetClipboardText('testing 123')
win32clipboard.CloseClipboard()
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How to extract a floating number from a string [duplicate]
I have a number of strings similar to Current Level: 13.4 db. and I would like to extract just the floating point number. I say floating and not decimal as it's sometimes whole. Can RegEx do this or is there a better way?
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Set font-weight using Bootstrap classes
...ite.css (or in another place) a new class named for example .font-bold and set it to your element
.font-bold {
font-weight: bold;
}
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Origin is not allowed by Access-Control-Allow-Origin
...ontrol-Allow-Origin: *
Thought don't use "*" if your server is trying to set cookie and you use withCredentials = true
when responding to a credentialed request, server must specify a domain, and cannot use wild carding.
You can read more about withCredentials here
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MFC Grid control 2.27 - C/C++ - 清泛网 - 专注IT技能提升
...ividual cells can be marked "Read-Only", or have their modification status set and checked.
OLE Drag and drop.
Ctrl-C, Ctrl-X and Ctrl-V perform clipboard copy, cut and paste, and Ctrl-A for "Select All"
In place editing of cell contents. If a character key is pressed while a cell has focus, edit...
MFC Grid control 2.27 - C/C++ - 清泛网 - 专注IT技能提升
...ividual cells can be marked "Read-Only", or have their modification status set and checked.
OLE Drag and drop.
Ctrl-C, Ctrl-X and Ctrl-V perform clipboard copy, cut and paste, and Ctrl-A for "Select All"
In place editing of cell contents. If a character key is pressed while a cell has focus, edit...