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Purge or recreate a Ruby on Rails database
...ave a dev Ruby on Rails database full of data. I want to delete everything and rebuild the database. I'm thinking of using something like:
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How do I add comments to package.json for npm install?
I've got a simple package.json file and I want to add a comment. Is there a way to do this, or are there any hacks to make this work?
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How to check for file lock? [duplicate]
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No, unfortunately, and if you think about it, that information would be worthless anyway since the file could become locked the very next second (read: short timespan).
Why specifically do you need to know if the file is locked anyway? Knowing...
What's the best way to build a string of delimited items in Java?
...,char)
Java 8:
Java 8 provides joining out of the box via StringJoiner and String.join(). The snippets below show how you can use them:
StringJoiner
StringJoiner joiner = new StringJoiner(",");
joiner.add("01").add("02").add("03");
String joinedString = joiner.toString(); // "01,02,03"
Str...
Capturing standard out and error with Start-Process
Is there a bug in PowerShell's Start-Process command when accessing the StandardError and StandardOutput properties?
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Convert list of dictionaries to a pandas DataFrame
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As of Pandas 0.19.2, there's no mention of this in the documentation, at least not in the docs for pandas.DataFrame
– Leo Alekseyev
Apr 13 '17 at 22:56
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Method Syntax in Objective-C
...kerView (slot machine UI on the iPhone) is being returned. From my understanding, the Method is called ' pickerView ', and returns an NSInteger.
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How to parse JSON using Node.js? [closed]
...hould I parse JSON using Node.js? Is there some module which will validate and parse JSON securely?
31 Answers
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Check if a file exists with wildcard in shell script [duplicate]
... completely silent.
EDIT: Since this answer has got a bit of attention (and very useful critic remarks as comments), here is an optimization that also relies on glob expansion, but avoids the use of ls:
for f in /path/to/your/files*; do
## Check if the glob gets expanded to existing files.
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Clojure differences between Ref, Var, Agent, Atom, with examples
...here to use Ref, Var, Agent, Atom. I read book, but, still couldn't understand the real world examples.
5 Answers
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