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What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
...══════╗
║ Property ║ HashMap ║ Hashtable ║ ConcurrentHashMap ║
╠═══════════════╬═══════════════════╬═══════════════════╩═════...
CSS: 100% font size - 100% of what?
...serve a purpose is in Quirks mode, where font sizes are not inherited into tables. With this style, tables do get the parent font size. Of course, nobody in their right mind uses Quirks mode any more...
– Mr Lister
Feb 21 '14 at 19:25
...
Object-orientation in C
...ual functions), you use function pointers, and optionally function pointer tables, also known as virtual tables or vtables:
struct base;
struct base_vtable
{
void (*dance)(struct base *);
void (*jump)(struct base *, int how_high);
};
struct base
{
struct base_vtable *vtable;
/* bas...
How do I escape a single quote?
...ve list, see the W3C HTML5 Named Character References or the HTML entities table on WebPlatform.org.
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How can I add “href” attribute to a link dynamically using JavaScript?
...one you can use without having to setAttribute. Another example is the <table> element (HTMLTableElement) where you can use insertRow() to insert new rows without having to create the <tr> and append it to the table.
– Thai
Jan 14 '11 at 9:00
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Referring to a Column Alias in a WHERE Clause
...done with parenthesis to force logical order of operation or with a Common Table Expression (CTE):
Parenthesis/Subselect:
SELECT
*
FROM
(
SELECT
logcount, logUserID, maxlogtm,
DATEDIFF(day, maxlogtm, GETDATE()) AS daysdiff
FROM statslogsummary
) as innerTable
WHERE daysdiff...
What are the differences between Clojure, Scheme/Racket and Common Lisp?
...
The people above missed a few things
Common Lisp has vectors and hash tables as well. The difference is that Common Lisp uses #() for vectors and no syntax for hash tables. Scheme has vectors, I believe
Common Lisp has reader macros, which allow you to use new brackets (as does Racket, a descen...
Generating CSV file for Excel, how to have a newline inside a value
...l;}
-->
</style>
</head>
<body>
<table>
<tr>
<td>first line<br/>second line</td>
<td style="white-space:normal">first line<br/>second line</td>
</tr>
</table>
</bod...
How does facebook, gmail send the real time notification?
...oblems away. In terms of PHP, you could simply poll an event log database table in your PHP script, and only return to the client when something happens? There are, I expect, many ways of implementing this.
Implementing:
Server Side:
There appear to be a few implementations of comet libraries in...
How to get rid of blank pages in PDF exported from SSRS
...dth, where the 2nd and 4th pages were displaying one of my fields from the table. I tried to set the layout size in report properties as width=18in and height =8.5in.
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