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Can someone explain the dollar sign in Javascript?
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Javascript does have types; and in any case, how is the dollar sign even related to that? It's just a character that happens to be a legal identifier in Javascript.
– Erik Kaplun
Nov 10 '11 at 22:0...
Use PHP to create, edit and delete crontab jobs?
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function append_cronjob doesn't work for me. I get the output '-' does not exist: Array ( [0] => '-' does not exist. [1] => usage: crontab file [2] => crontab [ -e | -l | -r ] [3] => -e (edit user's crontab) [4] => -l (list user's cr...
How to drop all user tables?
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This worked very well and it doesn't require that I have authority on the Oracle server to delete and re-add my user. Bravo. Great answer.
– djangofan
May 11 '11 at 22:43
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Copy entire contents of a directory to another using php
...t folder, as the question says: copy ("old_location/*.*","new_location/"); Does that work? What if you have dot files, will they be matched?
– XCS
Jul 14 at 23:52
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How can I check if a command exists in a shell script? [duplicate]
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For a real installation script, you'd probably want to be sure that type doesn't return successfully in the case when there is an alias foobar. In bash you could do something like this:
if ! foobar_loc="$(type -p "$foobar_command_name")" || [[ -z $foobar_loc ]]; then
# install foobar here
fi
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How to truncate milliseconds off of a .NET DateTime
... includes those milliseconds. The incoming request to the system, however, does not offer that precision, so I need to simply drop the milliseconds.
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How can I generate an MD5 hash?
...g the encoding. such as m.update(plaintext.getBytes("UTF-8")); getBytes() does not guarantee the encoding and may vary from system to system which may result in different MD5 results between systems for the same String.
– user1819780
Mar 27 at 5:35
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Using column alias in WHERE clause of MySQL query produces an error
... column aliases in GROUP BY, ORDER BY, or HAVING clauses.
Standard SQL doesn't allow you to
refer to a column alias in a WHERE
clause. This restriction is imposed
because when the WHERE code is
executed, the column value may not yet
be determined.
Copied from MySQL documentation
As ...
How do I compare two DateTime objects in PHP 5.2.8?
...lengths? The manual, regarding strings in numeric contexts: "If the string does not contain any of the characters '.', 'e', or 'E' and the numeric value fits into integer type limits (as defined by PHP_INT_MAX), the string will be evaluated as an integer. In all other cases it will be evaluated as a...
How to check if a string is a valid JSON string in JavaScript without using Try/Catch
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Just because it helps him, doesn't mean it helps the rest of us, who, years later, have the same question.
– McKay
Aug 11 '16 at 17:36
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