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Regular expression for first and last name
For website validation purposes, I need first name and last name validation.
23 Answers
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Reactjs: Unexpected token '
i am just starting with Reactjs and was writing a simple component to display
li tag and came across this error:
17 ...
Concat all strings inside a List using LINQ
Is there any easy LINQ expression to concatenate my entire List<string> collection items to a single string with a delimiter character?
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Difference Between Schema / Database in MySQL
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PostgreSQL supports schemas, which is a subset of a database:
https://www.postgresql.org/docs/current/static/ddl-schemas.html
A database contains one or more named schemas, which in turn contain
tables. Schemas also contain other kinds of named objects, including
data types, fun...
ERROR 1130 (HY000): Host '' is not allowed to connect to this MySQL server [duplicate]
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Your root account, and this statement applies to any account, may only have been added with localhost access (which is recommended).
You can check this with:
SELECT host FROM mysql.user WHERE User = 'root';
If you only see results with localhost and 127.0.0.1,...
Show diff between commits
...e sure to include all changes of k73ud in the resulting diff.
git diff compares two endpoints (instead of a commit range).
Since the OP want to see the changes introduced by k73ud, he/she needs to difference between the first parent commit of k73ud: k73ud^ (or k73ud^1 or k73ud~).
That way, the dif...
Count occurrences of a char in a string using Bash
...wing awk command:
string="text,text,text,text"
char=","
awk -F"${char}" '{print NF-1}' <<< "${string}"
I'm splitting the string by $char and print the number of resulting fields minus 1.
If your shell does not support the <<< operator, use echo:
echo "${string}" | awk -F"${cha...
Is there a cross-browser onload event when clicking the back button?
...http://webkit.org/blog/516/webkit-page-cache-ii-the-unload-event/
Firefox: https://developer.mozilla.org/En/Using_Firefox_1.5_caching.
Chrome: https://code.google.com/p/chromium/issues/detail?id=2879
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Center Align on a Absolutely Positioned Div
The div is at the top, but I can't center it with <center> or margin: 0 auto ;
9 Answers
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Difference between “!==” and “==!” [closed]
Yesterday I stumbled over this when I modified PHP code written by someone else. I was baffled that a simple comparison ( if ($var ==! " ") ) didn't work as expected. After some testing I realized that whoever wrote that code used ==! instead of !== as comparison operator. I've never seen ==! ...