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How can I disable ARC for a single file in a project?
...am using ARC successfully in my project. However, I have encountered a few files (e.g., in unit tests and mock objects) where the rules of ARC are a little more fragile right now. I recall hearing that there was a way to disable ARC on a per-file basis, though I have been unable to find this option....
Read and overwrite a file in Python
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If you don't want to close and reopen the file, to avoid race conditions, you could truncate it:
f = open(filename, 'r+')
text = f.read()
text = re.sub('foobar', 'bar', text)
f.seek(0)
f.write(text)
f.truncate()
f.close()
The functionality will likely also be cleane...
“PKIX path building failed” and “unable to find valid certification path to requested target”
...ow certificate" > "details" > "export..". Pickup the name and choose file type example.cer
chrome - click on site icon left to address in address bar, select "Certificate" -> "Details" -> "Export" and save in format "Der-encoded binary, single certificate".
Now you have file with keysto...
Windows batch file file download from a URL
I am trying to download a file from a website (ex. http://www.example.com/package.zip ) using a Windows batch file. I am getting an error code when I write the function below:
...
How do you default a new class to public when creating it in Visual Studio?
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You need to modify the file located in C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\ItemTemplates\CSharp\Code\1033.
Visual Studio 2010 (10.0) and below: There is a zip file in there called Class.zip. Unpack this, edit the file to put ...
What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?
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Yes. They are different file formats (and their file extensions).
Wikipedia entries for each of the formats will give you quite a bit of information:
JPEG (or JPG, for the file extension; Joint Photographic Experts Group)
PNG (Portable Network Gr...
xcopy file, rename, suppress “Does xxx specify a file name…” message
...ust overlooking the proper flag , but how would I, in one command, copy a file from one directory to another and rename it in the destination directory? Here's my command:
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seek() function?
...ch to worry about.
First of all, it is useful when operating over an open file.
It's important to note that its syntax is as follows:
fp.seek(offset, from_what)
where fp is the file pointer you're working with; offset means how many positions you will move; from_what defines your point of refer...
What are the Ruby File.open modes and options?
Ruby's File.open takes modes and options as arguments. Where do I find a complete list of modes and options?
2 Answers
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Is there a /dev/null on Windows?
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I think you want NUL, at least within a command prompt or batch files.
For example:
type c:\autoexec.bat > NUL
doesn't create a file.
(I believe the same is true if you try to create a file programmatically, but I haven't tried it.)
In PowerShell, you want $null:
echo 1 > $nu...