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Replacement for “rename” in dplyr
...e plyr's renaming function rename . I have recently started using dplyr, and was wondering if there is an easy way to rename variables using a function from dplyr, that is as easy to use as to plyr's rename ?
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Select n random rows from SQL Server table
...th about 50,000 rows in it. I want to select about 5,000 of those rows at random. I've thought of a complicated way, creating a temp table with a "random number" column, copying my table into that, looping through the temp table and updating each row with RAND() , and then selecting from that table...
The provider is not compatible with the version of Oracle client
...
I've been looking into this problem further, and you simply need to grab all the appropriate DLL's from the same downloaded version of ODP.Net and put them in the same folder as your Exe file, because ODP.Net is fussy about not mixing version numbers.
I've explained ho...
How do I edit /etc/sudoers from a script?
...ripts in debian packages. thanks! Since this is always root, it gets short and handy: echo "$CONFIGLINE" | (EDITOR="tee -a" visudo)
– Boris Däppen
Jan 5 '16 at 16:05
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Detect URLs in text with JavaScript
...ou need a good regex that matches urls. This is hard to do. See here, here and here:
...almost anything is a valid URL. There
are some punctuation rules for
splitting it up. Absent any
punctuation, you still have a valid
URL.
Check the RFC carefully and see if you
can construct ...
Convert a timedelta to days, hours and minutes
I've got a timedelta. I want the days, hours and minutes from that - either as a tuple or a dictionary... I'm not fussed.
7...
Separate Back Stack for each tab in Android using Fragments
I'm trying to implement tabs for navigation in an Android app. Since TabActivity and ActivityGroup are deprecated I would like to implement it using Fragments instead.
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What is the difference between screenX/Y, clientX/Y and pageX/Y?
What is the difference between screenX / Y , clientX / Y and pageX / Y ?
7 Answers
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Object comparison in JavaScript [duplicate]
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Unfortunately there is no perfect way, unless you use _proto_ recursively and access all non-enumerable properties, but this works in Firefox only.
So the best I can do is to guess usage scenarios.
1) Fast and limited.
Works when you have simple JSON-style objects without methods and DOM nodes...
Test iOS app on device without apple developer program or jailbreak
... has finally introduced a new feature in Xcode 7 that allows you to deploy and run any number of apps on any of your devices, simply by logging in with your Apple ID. You will no longer need a paid Program membership to deploy apps on your own device (and you certainly no longer have to jailbreak yo...