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Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”?
Why is it that scanf() needs the l in " %lf " when reading a double , when printf() can use " %f " regardless of whether its argument is a double or a float ?
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How to change the output color of echo in Linux
... setaf 1; echo "this is red text"
Use ; instead of && so if tput errors the text still shows.
Shell variables
Another option is to use shell variables:
red=`tput setaf 1`
green=`tput setaf 2`
reset=`tput sgr0`
echo "${red}red text ${green}green text${reset}"
tput produces character se...
Cannot obtain value of local or argument as it is not available at this instruction pointer, possibl
...f the arguments of the function in the unsafe block.
What could cause this error? The following message shows by the debugger.
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Linux, Why can't I write even though I have group permissions?
I want to create a file in a directory owned by the staff group which I am a member of. Why can I not do this?
6 Answers
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How persistent is localStorage?
I'm depending heavily on localStorage for a plugin I'm writing. All the user settings are stored in it. Some settings require the user the write regex'es and they would be sad if their regex rules are gone at some point.
So now I am wondering just how persistent the localStorage is.
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How can I default a parameter to Guid.Empty in C#?
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Explanation
Why didn't Guid.Empty work?
The reason you are getting the error is because Empty is defined as:
public static readonly Guid Empty;
So, it is a variable, not a constant (defined as static readonly not as const). Compiler can only have compiler-known values as method parameters def...
How to pass a function as a parameter in Java? [duplicate]
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– Alexander - Reinstate Monica
May 22 '14 at 23:05
3
@XAleXOwnZX you could use a single Callable<> inte...
How to change port number for apache in WAMP
... http://localhost/ in the browser it is not working. I am getting a 404 error and blank page .
8 Answers
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Difference between case object and object
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edited Mar 27 '16 at 13:05
answered Mar 11 '11 at 9:08
ax...
Add a column to a table, if it does not already exist
...ry for MS SQL Server that adds a column into a table. But I don't want any error display, when I run/execute the following query.
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