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How do I remove newlines from a text file?
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Using man 1 ed:
# cf. http://wiki.bash-hackers.org/doku.php?id=howto:edit-ed
ed -s file <<< $'1,$j\n,p' # print to stdout
ed -s file <<< $'1,$j\nwq' # in-place edit
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What is an “unwrapped value” in Swift?
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Example:
var canBeNil : Int? = 4
canBeNil = nil
The question mark indicates the fact that canBeNil can be nil.
This would not work:
var cantBeNil : Int = 4
cantBeNil = nil // can't do this
To get the value from your variable if it is optional, you have to unwrap it. This just means putting ...
'too many values to unpack', iterating over a dict. key=>string, value=>list
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@jeffm that's what confused me. i saw this as a PHP foreach.
– tipu
Mar 29 '11 at 16:23
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Regex to test if string begins with http:// or https://
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As a PHP input string: $regex = '/^(https?:\/\/)';
– Steve Tauber
Jul 28 '14 at 14:09
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File input 'accept' attribute - is it useful?
...pes.
Usage
Note: These examples were written based on the current specification and may not actually work in all (or any) browsers. The specification may also change in the future, which could break these examples.
h1 { font-size: 1em; margin:1em 0; }
h1 ~ h1 { border-top: 1px solid #ccc; pa...
text flowing out of div
...uld use overflow:hidden; or scroll
http://jsfiddle.net/UJ6zG/1/
or with php you could short the long words...
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How can I transform between the two styles of public key format, one “BEGIN RSA PUBLIC KEY”, the oth
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Using phpseclib, a pure PHP RSA implementation...
<?php
include('Crypt/RSA.php');
$rsa = new Crypt_RSA();
$rsa->loadKey('-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA61BjmfXGEvWmegnBGSuS
+rU9soUg2F...
Is mongodb running?
I have installed mongodb and the php drivers on my unix server.
9 Answers
9
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Why are these constructs using pre and post-increment undefined behavior?
...avior of actions that wouldn't be needed in high-end number crunching.applications. Rather than try to complicate the Standard...
– supercat
Dec 17 '17 at 23:12
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How to run Nginx within a Docker container without halting?
...uses the daemon off configuration:
https://github.com/darron/docker-nginx-php5/blob/master/Dockerfile#L17
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