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How can you use optional parameters in C#?
...("}"); sb.Append(" "); } String.Format(sb.ToString(),args).Dump(); } Sample call: log("...Done,",(watch.ElapsedMilliseconds/1000).ToString(),"s");
– pfonseca
Feb 20 '15 at 16:09
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Are the days of passing const std::string & as a parameter over?
...gested that the reasons to pass std::vector and std::string by const & are largely gone. He suggested that writing a function such as the following is now preferable:
...
How do I pronounce “=>” as used in lambda expressions in .Net
...
I usually say 'such that' when reading that operator.
In your example, p => p.Age > 16 reads as "P, such that p.Age is greater than 16."
In fact, I asked this very question on the official linq pre-release forums, and Ande...
How do I remove the space between inline/inline-block elements?
... --><li>Item 3</li>
</ul>
Or, if you are using using PHP or similar:
<ul>
<li>Item 1</li><?
?><li>Item 2</li><?
?><li>Item 3</li>
</ul>
Or, you can even skip certain closing tags entirely (all browsers ar...
In Vim, how do I apply a macro to a set of lines?
...ual selection or by a :40,50 / :+10
See http://www.vim.org/scripts/script.php?script_id=3271
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NOT IN vs NOT EXISTS
...o null.
This post explains it very well
http://sqlinthewild.co.za/index.php/2010/02/18/not-exists-vs-not-in/
When the subquery returns even one null, NOT IN will not match any
rows.
The reason for this can be found by looking at the details of what the
NOT IN operation actually means...
Inline code in org-mode
Markdown allows for embedded code . How can this be done in org-mode ?
2 Answers
2
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Ternary operator (?:) in Bash
...of if/else
case "$b" in
5) a=$c ;;
*) a=$d ;;
esac
Or
[[ $b = 5 ]] && a="$c" || a="$d"
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Validating parameters to a Bash script
...
#!/bin/sh
die () {
echo >&2 "$@"
exit 1
}
[ "$#" -eq 1 ] || die "1 argument required, $# provided"
echo $1 | grep -E -q '^[0-9]+$' || die "Numeric argument required, $1 provided"
while read dir
do
[ -d "$dir" ] || die "Directory $dir do...
How to search file text for a pattern and replace it with a given value
... Tempfile there, such as if you are trying to 'edit' a file in /proc for example. For that reason you might want to fall back and try /tmp if opening the file in the destination directory fails.
You must have enough space on the destination partition in order to hold both the complete old file and ...