大约有 44,000 项符合查询结果（耗时：0.0651秒） [XML]
How can I read numeric strings in Excel cells as string (not numbers)?
...system locale, it always uses the dot as a decimal separator. For example, if your system uses ",", and in Excel numbers look like "1,9", POI will return "1.9" instead.
– Alexey Berezkin
Jan 25 '13 at 10:39
...
Drop data frame columns by name
...hose still not acquainted with the drop argument of the indexing function, if you want to keep one column as a data frame, you do:
keeps <- "y"
DF[ , keeps, drop = FALSE]
drop=TRUE (or not mentioning it) will drop unnecessary dimensions, and hence return a vector with the values of column y.
...
User Authentication in ASP.NET Web API
...cepts:
Authentication is the mechanism whereby systems may securely identify their users. Authentication systems provide an answers to the questions:
Who is the user?
Is the user really who he/she represents himself to be?
Authorization is the mechanism by which a system determines what level o...
Easiest way to split a string on newlines in .NET?
...
new[] { Environment.NewLine },
StringSplitOptions.None
);
Edit:
If you want to handle different types of line breaks in a text, you can use the ability to match more than one string. This will correctly split on either type of line break, and preserve empty lines and spacing in the text:
...
How to delete selected text in the vi editor
I am using PuTTY and the vi editor. If I select five lines using my mouse and I want to delete those lines, how can I do that?
...
How to get nth jQuery element
....eq(n) will basically ignore the grouping, and get all options as a whole. If you want it per group, something like this is necessary: $('select').find('optgroup').each(function() { $(this).find('option').eq(n)...; })
– Dykam
Jan 30 '15 at 9:04
...
How to disable GCC warnings for a few lines of code
...of the diagnostics as of each push, and restore to that point at each pop. If a pop has no matching push, the command-line options are restored." -- from the GCC manual: gcc.gnu.org/onlinedocs/gcc/Diagnostic-Pragmas.html
– bobpaul
Jan 11 '13 at 18:43
...
Transparent ARGB hex value
...ue").
To keep it simple one chooses black (#00000000) or white (#00FFFFFF) if the color does not matter.
In the table you linked to you'll find Transparent defined as #00FFFFFF.
share
|
improve thi...
Ignore Typescript Errors “property does not exist on value of type”
...inates = (outerElement[0] as any).getBBox();
###Other solutions
Of course if you'd like to do it right, which is an overkill sometimes, you can:
Create own interface which simply extends HTMLElement
Introduce own typing which extends HTMLElement
...
How to create a new file together with missing parent directories?
...
This only works if the file was created with a path string which contains a parent directory, i.e. new File("file.txt").getParentFile() returns null, new File("dir/file.txt").getParentFile() returns the same as new File("dir")
...