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What is an index in SQL?
...SQL servers as well):
http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html
An index can be used to efficiently find all rows matching some column in your query and then walk through only that subset of the table to find exact matches. If you don't have indexes on any column in the WHERE clause...
How to properly add cross-site request forgery (CSRF) token using PHP
... token. The problem I'm having is that the token is only showing up in the HTML "value" some of the time. The rest of the time, the value is empty. Here is the code I am using on the AJAX form:
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What requests do browsers' “F5” and “Ctrl + F5” refreshes generate?
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Can't you do it as a proper HTML table?
– John Topley
Feb 20 '09 at 18:32
13
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Given final block not properly padded
...s described here:
http://www.rsa.com/products/bsafe/documentation/cryptoj35html/doc/dev_guide/group_CJ_SYM__PAD.html
(I assume you have the issue when you try to encrypt)
You can choose your padding schema when you instantiate the Cipher object. Supported values depend on the security provider you...
Where can I set environment variables that crontab will use?
... The period is equivalent to the "source" command: tldp.org/LDP/abs/html/special-chars.html#DOTREF
– Jeff W
Mar 8 '13 at 21:55
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Is a URL allowed to contain a space?
...t tell the reader that they have been obsoleted. Hint: use tools.ietf.org/html/rfcnnnn, such as tools.ietf.org/html/rfc2396 instead, it displays the missing metadata on top.
– Julian Reschke
Feb 1 '09 at 14:41
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How to tell whether a point is to the right or left side of a line
...s the cross product, in two dimensions: mathworld.wolfram.com/CrossProduct.html
– brianmearns
Sep 4 '13 at 0:53
4
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Python UTC datetime object's ISO format doesn't include Z (Zulu or Zero offset)
...angerous to use! See blog.ganssle.io/articles/2018/03/pytz-fastest-footgun.html
– ivan_pozdeev
May 10 '19 at 9:44
@iva...
How to dynamically load a Python class
... Link @naoko is referring to: docs.python.org/3/library/importlib.html#importlib.__import__
– Noel Evans
Feb 21 at 11:23
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Are parameters in strings.xml possible? [duplicate]
...://developer.android.com/intl/pt-br/guide/topics/resources/string-resource.html#FormattingAndStyling
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