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How to count items in a Go map?
...ed from the now-retired SO documentation:
m := map[string]int{}
len(m) // 0
m["foo"] = 1
len(m) // 1
If a variable points to a nil map, then len returns 0.
var m map[string]int
len(m) // 0
Excerpted from Maps - Counting map elements. The original author was Simone Carletti. Attribution det...
GLib compile error (ffi.h), but libffi is installed
...
270
If you have a Debian-based Linux OS with apt-get:
sudo apt-get install libffi-dev
With a Redh...
Inline elements shifting when made bold on hover
...
401
li {
display: inline-block;
font-size: 0;
}
li a {
display:inline-block;
...
Difference between pre-increment and post-increment in a loop?
..., returns the new value.
C#:
string[] items = {"a","b","c","d"};
int i = 0;
foreach (string item in items)
{
Console.WriteLine(++i);
}
Console.WriteLine("");
i = 0;
foreach (string item in items)
{
Console.WriteLine(i++);
}
Output:
1
2
3
4
0
1
2
3
foreach and while loops depend on w...
Test whether string is a valid integer
...
[[ $var =~ ^-?[0-9]+$ ]]
The ^ indicates the beginning of the input pattern
The - is a literal "-"
The ? means "0 or 1 of the preceding (-)"
The + means "1 or more of the preceding ([0-9])"
The $ indicates the end of the input pattern
...
How is this fibonacci-function memoized?
... and kept ready in case it is asked for again. If we define some list, xs=[0..] and later ask for its 100th element, xs!!99, the 100th slot in the list gets "fleshed out", holding the number 99 now, ready for next access.
That is what that trick, "going-through-a-list", is exploiting. In normal do...
Where is the syntax for TypeScript comments documented?
...|
edited Apr 27 '19 at 14:07
slideshowp2
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ans...
Ruby replace string with captured regex pattern
...
edited Feb 12 '15 at 13:10
Jake Berger
4,67911 gold badge2424 silver badges2121 bronze badges
answered ...
Extracting Nupkg files using command line
...
106
You can also use the NuGet command line, by specifying a local host as part of an install. For ...
How do i put a border on my grid in WPF?
...gt;
<Grid Height="166" HorizontalAlignment="Left" Margin="12,12,0,0" Name="grid1" VerticalAlignment="Top" Width="479" Background="#FFF2F2F2" />
</Border>
</Grid>
This should get you what you're after (though you may want to put a margin on all 4 sides, not just 2...)
...