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Is returning null bad design? [closed]
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I too do not like return null. You are separating root cause from symptom, making debugging harder. Either throw an exception (fail fast), or call a checker method that returns a boolean first (e.g. isEmpty()) and only if it is true then call the method. People argue agains...
What does a \ (backslash) do in PHP (5.3+)?
...a lot faster. However this only works when the functions are placed in the root namespace. See this discussion about this topic. So besides namespacing, the \ indirectly also affects code optimisation.
The following native functions benefit from this effect:
"array_slice"
"assert"
"boolval"
"call_...
Why should I use Google's CDN for jQuery?
...ing a CDN and if it provides the expected performance benefits.
http://www.root777.com/appdev/does-using-google-libraries-api-cdn-give-you-performance-benefits
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ASP MVC href to a controller/view
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Here '~' refers to the root directory ,where Home is controller and Download_Excel_File is actionmethod
<a href="~/Home/Download_Excel_File" />
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How to find a parent with a known class in jQuery?
... than give every child <div> an identifier, I rather just give the root <div> the identifier. Here’s an example:
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Use IntelliJ to generate class diagram
...how Diagram from the context menu of a package. Invoking it on the project root will show module dependencies diagram.
If you need multiple packages, you can drag&drop them to the already opened diagram for the first package and press e to expand it.
Note: This feature is available in the Ulti...
Which is the best library for XML parsing in java [closed]
... to be initialized with the used classes, but you just have to specify the root classes and don't have to worry about static referenced classes.
You use annotations to specify which classes should be elements (@XmlRootElement) and which fields are elements(@XmlElement) or attributes (@XmlAttribute, ...
SecItemAdd and SecItemCopyMatching returns error code -34018 (errSecMissingEntitlement)
...e the -34018 error on iOS
8.3. This is the first step in identifying the root cause and then coming up with a fix.
As usual, we can't commit to a release timeframe, but this has
affected many developers and we really want to get this resolved.
Earlier I suggested adding a small delay i...
Determining Whether a Directory is Writeable
... cause weirdness in SUID/SGID environments. (‘but the script runs setuid root, why can't it write to the file?’)
– Alexios
May 13 '16 at 8:37
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What is __pycache__?
...all of these folders in your project by running following command from the root folder of your project.
find . -name '__pycache__' -exec chflags hidden {} \;
Replace __pycache__ with *.pyc for Python 2.
This sets a flag on all those directories (.pyc files) telling Finder/Textmate 2 to exclude ...