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Pass variables to Ruby script via command line
... variables and have only logical true/false values.
You can access values from environment variables:
> FIRST_NAME='Andy Warhol' ruby -e 'puts ENV["FIRST_NAME"]'
> Andy Warhol
Drawbacks are present here to, you have to set all the variables before the script invocation (only for your ruby ...
How to get error information when HttpWebRequest.GetResponse() fails
...more information. For example, I would like to pass the exception message from server to client. Is this possible using HttpWebRequest and HttpWebResponse?
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How to Set Opacity (Alpha) for View in Android
....getBackground().setAlpha(128); // 50% transparent
Where the INT ranges from 0 (fully transparent) to 255 (fully opaque).
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Default template arguments for function templates
...as second class citizens and required all template arguments to be deduced from the function arguments rather than specified.
The restriction seriously cramps programming style by unnecessarily making freestanding functions different from member functions, thus making it harder to write STL-sty...
Is it possible to reference one CSS rule within another?
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No, you cannot reference one rule-set from another.
You can, however, reuse selectors on multiple rule-sets within a stylesheet and use multiple selectors on a single rule-set (by separating them with a comma).
.opacity, .someDiv {
filter:alpha(opacity=60)...
RegEx for matching UK Postcodes
...xactly what you want but would be a good starting point. The RegEx differs from the XML slightly, as a P character in third position in format A9A 9AA is allowed by the definition given.
The RegEx supplied by the UK Government was:
([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za-z][0-9]{1,2})|(([A-Za-z][A-Ha-hJ-...
Java EE 6 @javax.annotation.ManagedBean vs. @javax.inject.Named vs. @javax.faces.ManagedBean
...es an optional name parameter. This name can be used to reference the bean from JSF pages.
Scope can be applied to the bean using one of the different scopes defined in the javax.faces.bean package which include the request, session, application, view and custom scopes.
@ManagedBean(name="someBean...
how to get the one entry from hashmap without iterating
Is there a elegant way of obtaining only one Entry<K,V> from HashMap, without iterating, if key is not known.
14 An...
hadoop No FileSystem for scheme: file
...s remains (the last one that was added). In this case, the FileSystem list from hadoop-commons overwrites the list from hadoop-hdfs, so DistributedFileSystem was no longer declared.
How we fixed it
After loading the Hadoop configuration, but just before doing anything FileSystem-related, we call t...
Packing NuGet projects compiled in release mode?
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For anyone who wants the short story from the link (good read, though), there was a change from v1.3 to v1.4 that goes from a default of Release to a default pulled from a project setting that can only be modified in the project file directly (no VS GUI option)....