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Resize image in PHP
...imon Jarvis
* Copyright: 2006 Simon Jarvis
* Date: 08/11/06
* Link: http://www.white-hat-web-design.co.uk/blog/resizing-images-with-php/
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software...
What are the differences between the different saving methods in Hibernate?
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This link explains in good manner :
http://www.stevideter.com/2008/12/07/saveorupdate-versus-merge-in-hibernate/
We all have those problems that we encounter just infrequently enough that when we see them again, we know we’ve solved this, but can’t remember how.
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How to use > in an xargs command?
...n example and that you may need > for other things. GNU Parallel http://www.gnu.org/software/parallel/ may be your rescue. It does not need additional quoting as long as your filenames do not contain \n:
ls | parallel "grep ABC {} > {}.out"
If you have filenames with \n in it:
find . -prin...
'typeid' versus 'typeof' in C++
...nformation about the runtime type of the value.
typeof Reference: http://www.delorie.com/gnu/docs/gcc/gcc_36.html
typeid Reference: https://en.wikipedia.org/wiki/Typeid
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What exactly does stringstream do?
...m trying to learn C++ since yesterday and I am using this document: http://www.cplusplus.com/files/tutorial.pdf (page 32) . I found a code in the document and I ran it. I tried inputting Rs 5.5 for price and an integer for quantity and the output was 0.
I tried inputting 5.5 and 6 and the output wa...
How can I decompress a gzip stream with zlib?
...gzip format, use wbits = zlib.MAX_WBITS | 16
See documentation in http://www.zlib.net/manual.html#Advanced (section inflateInit2)
examples
test data:
>>> deflate_compress = zlib.compressobj(9, zlib.DEFLATED, -zlib.MAX_WBITS)
>>> zlib_compress = zlib.compressobj(9, zlib.DEFLATE...
What is the difference between JDK and JRE?
...s less Disk space.
The JRE can be downloaded/supported freely from
https://www.java.com
It includes the JVM , Core libraries and other additional components to run applications and applets written in Java.
JDK (Java Development Kit)
It is a bundle of software that you can use to develop Java bas...
What is the difference between “Rollback…” and “Back Out Submitted Changelist #####” in Perforce P4V
...changes made in subsequent revisions.
For details please refer to https://www.perforce.com/perforce/r13.1/manuals/p4v/Working_with_changelists.html
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WebSockets vs. Server-Sent events/EventSource
...o that means that you can open 6 SSE connections across all of the tabs to www.example1.com and another 6 SSE connections to www.example2.com (thanks Phate).
Only WS can transmit both binary data and UTF-8, SSE is limited to UTF-8. (Thanks to Chado Nihi).
Some enterprise firewalls with packet inspec...
What's the (hidden) cost of Scala's lazy val?
...n suffer thread safety problem as mentioned in double check locking http://www.javaworld.com/javaworld/jw-05-2001/jw-0525-double.html?page=1
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