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How do you delete a column by name in data.table?
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@user3969377 if you want to remove a column based on the contents of a character variable you'd simply wrap it in parenthesis. Ie. df[,(afoo):=NULL]
– Dean MacGregor
Jul 9 '15 at 19:26
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Script entire database SQL-Server
...y I can get a scripting of all tables, procs, and other objects from a database? I know there's an option to script the database but it only gave me some sort of top level script, certainly not a script to create all tables, procs, udfs, .etc.
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How to record webcam and audio using webRTC and a server-based Peer connection
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You can use RecordRTC-together, which is based on RecordRTC.
It supports recording video and audio together in separate files. You will need tool like ffmpeg to merge two files into one on server.
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Render HTML to an image
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@Subho it's a String containing the URL with base64-encoded data
– tsayen
Feb 14 '17 at 16:00
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Support for “border-radius” in IE
...t, allowing you to serve different style definitions to different browsers based on their capabilities.
Obviously, these both add more overhead, but with IE9 due to only run on Vista/7 we might be stuck for quite awhile. As of August 2010 Windows XP still accounts for 48% of web client OSes.
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Does ruby have real multithreading?
... with:
jruby 1.5.6 (ruby 1.8.7 patchlevel 249) (2014-02-03 6586)
(OpenJDK 64-Bit Server VM 1.7.0_75) [amd64-java]
The second is with:
ruby 2.1.2p95 (2014-05-08) [x86_64-linux-gnu]
Interestingly, the CPU is higher for JRuby threads, but the time to completion is slightly shorter for the interpre...
Gcc error: gcc: error trying to exec 'cc1': execvp: No such file or directory
...pine environment
If you are in docker-alpine environment install the build-base package by adding this to your Dockerfile:
RUN apk add build-base
Better package name provided by Pablo Castellano. More details here.
If you need more packages for building purposes, consider adding of the alpine-sdk p...
What does the X-SourceFiles header do?
...rstood by certain debugging modules in IIS / IIS Express. It contains the base64-encoded path to the source file on disk and is used to link a page's generated output back to that source file. It's only generated for localhost requests, so you don't need to worry about it being displayed to the wo...
Eclipse IDE: How to zoom in on text?
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Ctrl++ and Ctrl+- works (using Eclipse 4.2.1 Win 7 64bit) Nice plugin, Thanks!
– Crocodile
Jan 10 '13 at 6:31
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