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Dynamically set local variable [duplicate]
...modules, class definitions, instances) are usually done by dictionary lookups (as Sven points out in the comments there are exceptions, for example classes that define __slots__). Function locals can be optimised for speed because the compiler (usually) knows all the names in advance, so there isn't...
How to configure 'git log' to show 'commit date'
...%cr)%Creset %C(green)%ce%Creset %s\" bash: syntax error near unexpected token `('
– frakman1
Mar 31 '16 at 0:22
...
Case preserving substitute in Vim
...match(0), 0 ,1) == toupper(strpart(submatch(0), 0, 1)) ? "GOOD" : "good"/
ps. i'm guessing keepcase.vim encapsulates some similar logic :)
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redirect COPY of stdout to log file from within bash script itself
....sh, you will get an error along the lines of syntax error near unexpected token '>'.
If you are working with signal traps, you might want to use the tee -i option to avoid disruption of the output if a signal occurs. (Thanks to JamesThomasMoon1979 for the comment.)
Tools that change their o...
Windows: How to specify multiline command on command prompt?
...e Why should it? PowerShell is completely separate! The equivalent key for PS is `.
– WhatIsHeDoing
Nov 14 '17 at 13:42
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Test for existence of nested JavaScript object key
...his will allow you to safely access deeply nested properties, by using the token ?., the new optional chaining operator:
const value = obj?.level1?.level2?.level3
If any of the levels accessed is null or undefined the expression will resolve to undefined by itself.
The proposal also allows you ...
Bash script to set up a temporary SSH tunnel
...lished before placing itself in the background. You can grep the output of ps to get the PID. For example you can use
...
ssh -Cfo ExitOnForwardFailure=yes -NL 9999:localhost:5900 $REMOTE_HOST
PID=$(pgrep -f 'NL 9999:')
[ "$PID" ] || exit 1
...
and be pretty sure you're getting the desired PID
...
How do I call Objective-C code from Swift?
...tions: [NSObject: AnyObject]?) -> Bool {
Mixpanel.sharedInstanceWithToken("your-token")
return true
}
That's it!
Note: If you remove the bridging header file from your project, be sure to go into Build Settings and remove the value for "Objective-C Bridging Header" under "Swift Compile...
Convert HTML + CSS to PDF [closed]
...s that html2pdf does a conversion into xhtml as part of the process. Perhaps that took me over (although nearly 50% bloat seems odd). Whatever the case, the above worked.
Now, html2pdf is a resource hog. My 70k file takes approximately 5 minutes and at least 500-600M of RAM to create a 35 page PD...
GNU Makefile rule generating a few targets from a single source file
...es multiple targets with a single invocation. To use this, replace the ":" token with "&:" in the rule. To detect this feature search for 'grouped-target' in the .FEATURES special variable. Implementation contributed by Kaz Kylheku <kaz@kylheku.com>
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