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Vim Regex Capture Groups [bau -> byau : ceu -> cyeu]
...ed by escaped parentheses:
:%s/\(\w\)\(\w\w\)/\1y\2/g
Slightly shorter (and more magic-al) is to use \v, meaning that in the pattern after it all ASCII characters except '0'-'9', 'a'-'z', 'A'-'Z' and '_' have a special meaning:
:%s/\v(\w)(\w\w)/\1y\2/g
See:
:help \(
:help \v
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Get characters after last / in url
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Thanks. Simple and practicle!!
– Rodrigo Zuluaga
Jul 14 at 17:34
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Mock HttpContext.Current in Test Init Method
...xt itself is fakeable just enough for you do replace the IPrincipal (User) and IIdentity.
The following code runs as expected, even in a console application:
HttpContext.Current = new HttpContext(
new HttpRequest("", "http://tempuri.org", ""),
new HttpResponse(new StringWriter())
);
/...
Get checkbox value in jQuery
... @Jawa: The first one was just an example to show the syntax and thanks for that typo.
– Sarfraz
May 14 '10 at 13:38
144
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socket.emit() vs. socket.send()
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I don't know, I checked the source code and they make almost the same (github.com/LearnBoost/socket.io/blob/master/lib/socket.js#L318). Maybe it's historical and just for backwards compatibility.
– Charles
Jul 20 '12 at 6:53
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Format number to always show 2 decimal places
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@Kooilnc: OP wants 1 to display as 1.00, and 1.341 to display as 1.34.
– drudge
May 26 '11 at 16:59
54
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Can HTML be embedded inside PHP “if” statement?
...dition is true</a>
<?php endif; ?>
By request, here's elseif and else (which you can also find in the docs)
<?php if($condition) : ?>
<a href="http://yahoo.com">This will only display if $condition is true</a>
<?php elseif($anotherCondition) : ?>
more h...
CSS border less than 1px [duplicate]
...ay also be used to simulate the same effect, without the need to calculate and manipulate RGB values.
.container {
border-style: solid;
border-width: 1px;
margin-bottom: 10px;
}
.border-100 { border-color: rgba(0,0,255,1); }
.border-75 { border-color: rgba(0,0,255,0.75); }
.border-50 {...
How can I create a correlation matrix in R?
...correlation. So, the number of rows must be the same between your matrix x and matrix y. Ex.:
set.seed(1)
x <- matrix(rnorm(20), nrow=5, ncol=4)
y <- matrix(rnorm(15), nrow=5, ncol=3)
COR <- cor(x,y)
COR
image(x=seq(dim(x)[2]), y=seq(dim(y)[2]), z=COR, xlab="x column", ylab="y column")
text...
Converting integer to binary in python
...fter the colon is the formatting, the second 0 means zero fill to 8 spaces and b for binary
– jamylak
May 2 '12 at 9:39
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