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Set object property using reflection
...rty,
Type.DefaultBinder, obj, "Value");
This will throw an exception if obj doesn't have a property called Name, or it can't be set.
Another approach is to get the metadata for the property, and then set it. This will allow you to check for the existence of the property, and verify that it ca...
Python argparse: Make at least one argument required
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if not (args.process or args.upload):
parser.error('No action requested, add -process or -upload')
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Retrieving a List from a java.util.stream.Stream in Java 8
...is that the code as it stands (forEach(targetLongList::add)) would be racy if the stream was parallel. Even then, it will not achieve the effect intended, as forEach is explicitly nondeterministic—even in a sequential stream the order of element processing is not guaranteed. You would have to use ...
How to permanently set $PATH on Linux/Unix? [closed]
...the system or user session. In case of the shell script you must use a specific shell syntax and export or set commands.
System wide
/etc/environment List of unique assignments, allows references. Perfect for adding system-wide directories like /usr/local/something/bin to PATH variable or definin...
Converting RGB to grayscale/intensity
When converting from RGB to grayscale, it is said that specific weights to channels R, G, and B ought to be applied. These weights are: 0.2989, 0.5870, 0.1140.
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How do you convert an entire directory with ffmpeg?
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If you're like me and have lots of spaces (and a few other problematic characters) in your file names, I'd suggest addding double quotes : ffmpeg -i "$i" "$name.mov";
– Pif
Dec 17 '12 at...
What does “Protocol … can only be used as a generic constraint because it has Self or associated typ
...create a Dictionary (actually a HashSet ) keyed on a custom protocol in Swift, but it is giving me the error in the title:
...
How to detect reliably Mac OS X, iOS, Linux, Windows in C preprocessor? [duplicate]
If there's some cross-platform C/C++ code that should be compiled on Mac OS X, iOS, Linux, Windows, how can I detect them reliably during preprocessor process?
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PHP: How to handle
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@SimonePalazzo XML consists of various different "nodes" - e.g. <anElement>a text node <aChildElement /> <![CDATA a cdata node]]> another text node</anElement>. The CDATA and text nodes are different types, and SimpleXML tracks this so you c...
SVN command to delete all locally missing files
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If you are using TortoiseSVN, just do a Check for Modifications, sort by the Status column, select all the entries marked missing, right-click to open the context menu, and select Delete. Finally, commit to publish the change...