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Reference: Comparing PHP's print and echo
...lues and this derives from PHP's Perl legacy.
But, if this is the case, then one may wonder why echo take multiple arguments whereas print can only handle one. For this answer we need to turn to the parser, specifically the file zend_language_parser.y. You will note that echo has the flexibilit...
How do I select an element with its name attribute in jQuery? [duplicate]
...eft, meaning regardless of elements, it would still search the name first, then the element. Hence your extended answer has little meat. But still, good answer :)
– Madara's Ghost
Mar 13 '12 at 7:45
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Quick easy way to migrate SQLite3 to MySQL? [closed]
...3 sample.db .dump | python dump_for_mysql.py > dump.sql
Which you can then import into mysql
note - you need to add foreign key constrains manually since sqlite doesn't actually support them
here is the script:
#!/usr/bin/env python
import re
import fileinput
def this_line_is_useless(line)...
What is SaaS, PaaS and IaaS? With examples
...le client who wants to make use of a software but you have nothing in hand then you use SaaS.
When you have a software developed by you, but you want to deploy and run on a publicly available platform then you use PaaS.
When you have the software and the platform ready but you want the hardware to...
What is the runtime performance cost of a Docker container?
...r’s NAT — if you use port mapping (e.g., docker run -p 8080:8080), then you can expect a minor hit in latency, as shown below. However, you can now use the host network stack (e.g., docker run --net=host) when launching a Docker container, which will perform identically to the Native column ...
Why should I declare a virtual destructor for an abstract class in C++?
.... If you do not give your interfaces/abstract classes virtual destructors, then every time you delete a derived class instance via a base class handle your derived class' destructor will not be called.
Hence, you're opening up the potential for memory leaks
class IFoo
{
public:
virtual void ...
What is the difference between using IDisposable vs a destructor in C#?
...uld mark a structure as "free". If an allocation request returns e.g. 23, then...
– supercat
May 18 '15 at 16:39
1
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How to have Emacs auto-refresh all buffers when files have changed on disk?
... I have set the variable in .emacs, but when i edit some code xcode, then read the file(already open) at that line, edit in xcode not there, need M-x revert-buffer handly.(mac + emacs 24.3.1)
– ericfang
May 7 '13 at 3:38
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In log4j, does checking isDebugEnabled before logging improve performance?
...ve and b) only wanted under certain conditions (eg when debug is enabled), then your only choice is to put a condition check around the call, and the framework can't do that for you. The thing with formatter-based log methods is that you can pass some Object(s) (which is essentially free), and the l...
.gitignore exclude folder but include specific subfolder
...
If you exclude application/, then everything under it will always be excluded (even if some later negative exclusion pattern (“unignore”) might match something under application/).
To do what you want, you have to “unignore” every parent directo...