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Rails: What's a good way to validate links (URLs)?
...to do.
A regular expression can validate the format of the URL. But even a complex regular expression cannot ensure you are dealing with a valid URL.
For instance, if you take a simple regular expression, it will probably reject the following host
http://invalid##host.com
but it will allow
http://i...
Run automatically program on startup under linux ubuntu [closed]
...itical that absolute paths are used throughout. BUT, as pointed out in the comments by Steve HHH, explicitly declaring the full file path (/etc/init.d/filename) for the update-rc.d command is not valid in most versions of Linux. Per the manpage for update-rc.d, the second parameter is a script locat...
Difference between GIT and CVS
...sion control is as simple as "git init && git add . && git commit" in Git, while it is more complicated in CVS.
Atomic operations. Because CVS at beginning was a set of scripts around per-file RCS version control system, commits (and other operations) are not atomic in CVS; if an op...
Javascript for “Add to Home Screen” on iPhone?
...t engine when mobile safari was already running much faster engine 9to5mac.com/2014/06/03/…
– Pawel
Oct 8 '14 at 13:09
...
OPTION (RECOMPILE) is Always Faster; Why?
I encountered an odd situation where appending OPTION (RECOMPILE) to my query causes it to run in half a second, while omitting it causes the query to take well over five minutes.
...
How to find/remove unused dependencies in Gradle
...buildscript {
repositories { jcenter() }
dependencies {
classpath 'com.netflix.nebula:gradle-lint-plugin:latest.release'
}
}
apply plugin: 'nebula.lint'
Define which rules you would like to lint against:
gradleLint.rules = ['all-dependency'] // Add as many rules here as you'd like
Fo...
What is the difference between the add and offer methods in a Queue in Java?
Take the PriorityQueue for example http://java.sun.com/j2se/1.5.0/docs/api/java/util/PriorityQueue.html#offer(E)
8 Answe...
Can I automatically increment the file build version when using Visual Studio?
...hese lines and just have:
[assembly: AssemblyVersion("1.0.*")]
Then the compiler will set the File Version to be equal to the Product Version and you will get your desired result of an automatically increment product and file version which are in sync. E.g. 1.0.3266.92689
...
Tracing XML request/responses with JAX-WS
...
Following options enable logging of all communication to the console (technically, you only need one of these, but that depends on the libraries you use, so setting all four is safer option). You can set it in the code like in example, or as command line parameter ...
resizes wrong; appears to have unremovable `min-width: min-content`
...he default value of min-content.¹
Still, Firefox is a bit… odd when it comes to fieldsets. To make this work in earlier versions, you must change the display property of the fieldset to one of the following values:
table-cell (recommended)
table-column
table-column-group
table-footer-group
tab...