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Can't use Swift classes inside Objective-C
...ibed here . But my problem is that Xcode haven't created the -Swift.h file, only the bridging headers. So I created it, but it's actually empty.
I can use all my ObjC classes in Swift, but I can't do it vice versa. I marked my swift class with @objc but it didn't help. What can I do now?
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Android Studio says “cannot resolve symbol” but project compiles
...a if this will work or not but my only thought so far: right click the jar file in file tree within AS and select "Add as library..."
EDIT: You can do "File" -> "Invalidate Caches...", and select "Invalidate and Restart" option to fix this.
EDIT 2: This fix should work for all similar incidents...
Most pythonic way to delete a file which may not exist
I want to delete the file filename if it exists. Is it proper to say
13 Answers
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How to safely open/close files in python 2.4
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See docs.python.org:
When you’re done with a file, call f.close() to close it and free up any system resources taken up by the open file. After calling f.close(), attempts to use the file object will automatically fail.
Hence use close() elegantly with try/finally:
f...
How can I load an object into a variable name that I specify from an R data file?
When you save a variable in an R data file using save , it is saved under whatever name it had in the session that saved it. When I later go to load it from another session, it is loaded with the same name, which the loading script cannot possibly know. This name could overwrite an existing variabl...
PowerShell Script to Find and Replace for all Files with a Specific Extension
I have several configuration files on Windows Server 2008 nested like such:
8 Answers
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What is the difference between a directory and a folder?
...kipedia. It states:
There is a difference between a directory, which is a file system concept, and the graphical user interface metaphor that is used to represent it (a folder). For example, Microsoft Windows uses the concept of special folders to help present the contents of the computer to the us...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
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Here's an implementation that uses a lockfile and echoes a PID into it. This serves as a protection if the process is killed before removing the pidfile:
LOCKFILE=/tmp/lock.txt
if [ -e ${LOCKFILE} ] && kill -0 `cat ${LOCKFILE}`; then
echo "already runni...
Elegant way to search for UTF-8 files with BOM?
For debugging purposes, I need to recursively search a directory for all files which start with a UTF-8 byte order mark (BOM). My current solution is a simple shell script:
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C# HttpClient 4.5 multipart/form-data upload
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Wow, it's so much simpler to do this when uploading big files to REST API. I don't like to comment for thanks, but thanks. It's portable for Windows Phone 8.
– Léon Pelletier
Jun 25 '13 at 8:50
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