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What is ActiveMQ used for - can we apply messaging concept using a Database?
...ages to consumers instead of a consumer having to poll for the new message by doing a SQL query.
This further reduces the latency involved in processing new messages being sent into the system.
share
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How to encode a URL in Swift [duplicate]
...ogleapis.com/maps/api/geocode/json?address=\(escapedAddress)")
Use stringByAddingPercentEncodingWithAllowedCharacters:
var escapedAddress = address.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())
Use stringByAddingPercentEscapesUsingEncoding: ...
__lt__ instead of __cmp__
...
This is covered by PEP 207 - Rich Comparisons
Also, __cmp__ goes away in python 3.0. ( Note that it is not present on http://docs.python.org/3.0/reference/datamodel.html but it IS on http://docs.python.org/2.7/reference/datamodel.html )
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Can I restore a single table from a full mysql mysqldump file?
...I was not sure if the table names in all mysql dumps are always surrounded by backquote or if "CREATE TABLE mytable" could also be possible. We can easily adapt the first regexp if we know how the dump looks like. A second problem could be if the table mytable is not unique (one in the database db1...
Best approach to remove time part of datetime in SQL Server
...()), 0)
Proven less CPU intensive for same total duration a million rows by some one with way too much time on their hands: Most efficient way in SQL Server to get date from date+time?
I saw a similar test elsewhere with similar results too.
I prefer the DATEADD/DATEDIFF because:
varchar is su...
Merge PDF files
...ary built as a PDF toolkit. It is capable of:
* splitting documents page by page,
* merging documents page by page,
(and much more)
Here's a sample program that works with both versions.
#!/usr/bin/env python
import sys
try:
from PyPDF2 import PdfFileReader, PdfFileWriter
except Import...
Does Firefox support position: relative on table elements?
... not understand the "accepted answer" flag and the much appreciation given by the votes up. Please check jsfiddle.net/ukR3q
– Jan
Apr 29 '13 at 17:05
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How to make an element in XML schema optional?
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
What's the difference between using CGFloat and float?
...oat is just a typedef for either float or double. You can see for yourself by Command-double-clicking on "CGFloat" in Xcode — it will jump to the CGBase.h header where the typedef is defined. The same approach is used for NSInteger and NSUInteger as well.
These types were introduced to make it ea...
What does the 'standalone' directive mean in XML?
...since it is supposed to be EMPTY. This is what the XML specification means by "markup declarations can affect the content of the document." You can then use the standalone declaration to tell the parser to ignore these rules.
Whether or not your parser actually does this is another question, but a ...