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How does the new automatic reference counting mechanism work?
... the "is it new" question, Delphi has had automatic reference counting for strings, arrays and interfaces (for COM support) for well over a decade. I agree that it really is a nice compromise between a gc'd environment and a "do it all manually" environment. I'm glad it's in ObjC and LLVM (so other ...
Returning a boolean from a Bash function
...Success at what? Could be checking for true/false, could be checking for a string, integer, file, directory, write permissions, glob, regex, grep, or any other command that is subject to failures.
– Bruno Bronosky
Sep 18 '17 at 14:56
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How to find the mime type of a file in python?
...this.
# For MIME types
import magic
mime = magic.Magic(mime=True)
mime.from_file("testdata/test.pdf") # 'application/pdf'
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Using pip behind a proxy with CNTLM
...http://web-proxy.mydomain.com install somepackage
But exporting the https_proxy environment variable (note its https_proxy not http_proxy) did the trick:
export https_proxy=http://web-proxy.mydomain.com
then
sudo -E pip install somepackage
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Utility classes are evil? [closed]
...web services in json format.
In theory you can manually convert objects to strings which will be in json, but that would reinvent the wheel. Correct solution would be to include in both modules external library used to convert java objects to desired format. (in example image I have shown gson)
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Set value of textarea in jQuery
...although val does take the time to make sure the value you're setting is a string, and attr seems to do a bit more magic overall.
– enobrev
Jan 6 '09 at 6:31
63
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WKWebView in Interface Builder
...func viewDidLoad() {
super.viewDidLoad()
if let url = URL(string: "https://google.com") {
let req = URLRequest(url: url)
webView?.load(req)
}
}
}
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psql: FATAL: role “postgres” does not exist
... which will just use the latest version.
start postgres server manually: pg_ctl -D /usr/local/var/postgres start
To start server at startup
mkdir -p ~/Library/LaunchAgents
ln -sfv /usr/local/opt/postgresql/*.plist ~/Library/LaunchAgents
launchctl load ~/Library/LaunchAgents/homebrew.mxcl.post...
Do a “git export” (like “svn export”)?
... To follow up on Streams' note: you can add a '--prefix=something/' string into the command to control the directory name that will be packed inside the zip. For example, if you use git archive --format zip --output /path/to/file.zip --prefix=newdir/ master the output will be called 'file.zip...
Dynamic Sorting within SQL Stored Procedures
...Exactly. My goal was to avoid doing an EXEC command on a big 5000 varchar string. Everything we do must be done via stored procedures if only for the added security since we can set permissions on them at the schema level. The scalability and performance gains are just a plus in our case.
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