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E11000 duplicate key error index in mongodb mongoose
... non-sparse index the answer is "yes" in MongoDB. Other databases (such as MySQL) would say "no".
– RickN
Apr 26 at 20:33
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show 2 more comm...
Set default value of an integer column SQLite
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It's the same logic used in MySQL; the default of a nullable column is already NULL, so to set a default otherwise would imply the column is non-nullable. If you specify a default on a nullable column without declaring it NOT NULL, it may confuse you wh...
Vim: apply settings on files in directory
...re expanding templates (which is quite useful to fetch the current project root directory and trim it from the pathnames expanded)
– Luc Hermitte
Dec 1 '10 at 16:08
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Renaming columns in pandas
...rename(columns=lambda x: x.lstrip(), inplace=True)
– root-11
Oct 21 '13 at 22:05
2
Similar to @ro...
What is the difference between build.sbt and build.scala?
...cala:
import sbt._
import Keys._
object Build extends Build {
lazy val root = Project(id = "root", base = file(".")).settings(
name := "hello",
version := "1.0"
)
}
The .sbt file can also include vals, lazy vals, and defs (but not objects and classes).
See the SBT document cal...
NoSQL (MongoDB) vs Lucene (or Solr) as your database
... Yes, this is exactly how I've used Lucene in the past with older SQL and MySql datastores (storing IDs in Lucene, and retrieving the complex types from the datastore). Technically though, this question was to explore the differences between the two - not exactly how to use the "best of both world...
What are the Android SDK build-tools, platform-tools and tools? And which version should be used?
...(i.e Eclipse or Android Studio).
Also used to connect Android devices and root them.(fastboot, adb and more..)
Always use the latest.(Recommended)
More Info on Android Build tools and commands
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Django, creating a custom 500/404 error page
...ing 404 errors. It finds it by looking for the variable handler404 in your root URLconf (and only in your root URLconf; setting handler404 anywhere else will have no effect), which is a string in Python dotted syntax – the same format the normal URLconf callbacks use. A 404 view itself has nothing...
Extract hostname name from string
I would like to match just the root of a URL and not the whole URL from a text string. Given:
27 Answers
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How do I limit the number of rows returned by an Oracle query after ordering?
Is there a way to make an Oracle query behave like it contains a MySQL limit clause?
17 Answers
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