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What's the difference between VARCHAR and CHAR?
...your content is a fixed size" it means the rows of your table must contain all fixed size fields. You get no performance improvement if you use CHAR against VARCHAR in one field, but the table contains other fields that are VARCHAR.
– Marco Demaio
May 20 '10 at...
Convert special characters to HTML in Javascript
... @JohnnyBizzle /g in a regular expression means "global". Simply put, all occurrences of the string will be replaced. Without /g only the first match would be replaced.
– Kevin G.
Jul 21 '16 at 11:42
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Limiting floats to two decimal points
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You are running into the old problem with floating point numbers that not all numbers can be represented exactly. The command line is just showing you the full floating point form from memory.
With floating point representation, your rounded version is the same number. Since computers are binary, ...
iOS (iPhone, iPad, iPodTouch) view real-time console log terminal
...y github account at
https://github.com/benvium/libimobiledevice-macosx/zipball/master
Follow the install instructions here:
https://github.com/benvium/libimobiledevice-macosx/blob/master/README.md
Connect your device, open up Terminal.app and type:
idevicesyslog
Up pops a real-time display of t...
How to prevent going back to the previous activity?
...rs to go back to. For instance, in your sign in activity, right after you call startActivity, call finish(). When the users hit the back button, they will not be able to go to the sign in activity because it has been killed off the stack.
...
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile
... am using Maven 3.0.5 and Spring Tool Source 3.2 with Maven plugin installed. When I try to do 'Run As---> Maven install', I am getting the following error:
...
Spring 3.0 - Unable to locate Spring NamespaceHandler for XML schema namespace [http://www.springfra
...y configuration xml can be a different one from applicationContext.xml, usually applicationContext-security.xml inside WEB-INF folder. The changes to be applied are for web.xml
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-...
What is the default access specifier in Java?
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It is known as 'package private' actually. Third-party web sites are not normative references. You should be citing the JLS only.
– Marquis of Lorne
Aug 22 '17 at 8:22
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Sql Server 'Saving changes is not permitted' error ► Prevent saving changes that require table re-cr
...is, then delete old table and rename the Temp Table back to original name. All fine to do as should be in transaction, however relationships will be broken and recreated so if not 100% then could do something unexpected.
– Justin King
Sep 28 '11 at 0:45
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When should I use genetic algorithms as opposed to neural networks? [closed]
...lution space of a GA problem as a set of states or values. Such as "Find all of the ways a set of four chess pieces could be arranged on a chessboard to create a checkmate." However the solution space can also be a set of algorithms. This is where the real power of genetic algorithms come into pl...