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Regular expression to match DNS hostname or IP Address?
...o be escaped with \.
ValidHostnameRegex is valid as per RFC 1123. Originally, RFC 952 specified that hostname segments could not start with a digit.
http://en.wikipedia.org/wiki/Hostname
The original specification of
hostnames in RFC
952,
mandated that labels could not start
with a d...
First-time database design: am I overengineering? [closed]
...you will take will largely be dependent on having and optimizing the right indexes for your particular queries / procedures and more importantly the volume of records. Unless you are talking about well over a million records in your main tables you seem to be on track to having a sufficiently mains...
How can I split up a Git commit buried in history?
...use git stash to hide away the part you haven't committed (or stash --keep-index before you even commit it), test, then git stash pop to return the rest to the work tree. Keep making commits until you get all modifications committed, i.e. have a clean work tree.
Run git rebase --continue to proceed ...
Why does Eclipse Java Package Explorer show question mark on some classes?
...on.
For other CVS Label Decorations, check http://help.eclipse.org/help33/index.jsp?topic=/org.eclipse.platform.doc.user/reference/ref-cvs-decorations.htm
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Hide/Show Column in an HTML Table
... get cell location - https://stackoverflow.com/a/4999018/1366033
var cellIndex = $cell[0].cellIndex + 1;
$table.find(".show-column-footer").show()
$table.find("tbody tr, thead tr")
.children(":nth-child("+cellIndex+")")
.hide()
})
$(".show-column-footer").click(function(e) {
...
scala vs java, performance and memory? [closed]
...y easy to use enormous amounts of memory without realizing it. This is usually very powerful, but occasionally can be annoying. For example, suppose you have an array of strings (called array), and a map from those strings to files (called mapping). Suppose you want to get all files that are in t...
Sending emails with Javascript
...ta of your SMTP server, It's best to do it on the server side with Node or PHP, thanks equally
– jcarlosweb
Nov 26 '18 at 13:49
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How do I rename a column in a database table using SQL?
...N MyOldColumn;
For the very simplest of cases (no constraints, triggers, indexes or keys), it will take the above 3 lines. For anything more complicated it can get very messy as you fill in the missing parts.
However, as mentioned above, there are simpler database specific methods if you know whi...
“git diff” does nothing
...t diff is the list of changes which have not been committed / added to the index. If there are no changes, then there is no output.
git diff [--options] [--] […]
This form is to view the changes you made relative to the index (staging area for the next commit). In other words, the differe...
How to determine whether a substring is in a different string
... @GamesBrainiac Actually, to do the same in JS it's just string.indexOf(substring) != -1, more here
– LasagnaAndroid
Feb 20 '14 at 20:42
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