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Const in JavaScript: when to use it and is it necessary?
...ure that contains information that will never change. If there is room for error, var should always be used. However, not all information that never changes in the lifetime of a program needs to be declared with const. If under different circumstances the information should change, use var to indica...
What is “callback hell” and how and why does RX solve it?
... to perform a new network request after 3 network responses returned or to error handle the whole chain if one does not return. Then it can reset itself and wait for the same 3 events.
– colintheshots
Sep 8 '14 at 17:48
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Python's many ways of string formatting — are the older ones (going to be) deprecated?
...described here exhibit a variety of quirks that lead to a number of common errors (such as failing to display tuples and dictionaries correctly). Using the newer formatted string literals or the str.format interface helps avoid these errors. These alternatives also provide more powerful, flexible an...
“Default Activity Not Found” on Android Studio upgrade
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If you see that error occur after upgrading versions of IntelliJ IDEA or Android Studio, or after Generating a new APK, you may need to refresh the IDE's cache.
File -> Invalidate Caches / Restart...
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Why would json_encode return an empty string
... return utf8_encode($d);
return $d;
}
One more note: json_last_error() may be helpful in debugging json_encode()/json_encode() functions.
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How can I define an interface for an array of objects with Typescript?
... code. I thought I was doing the definitions correctly but I am getting an error:
12 Answers
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Testing service in Angular returns module is not defined
...ct (Taken from the Angular Seed project on GitHub), but I keep getting the error "module is not defined".
7 Answers
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detach all packages while working in R
...oadNamespace(loadedNamespaces()). However these typically are fraught with errors and could break basic functionality such as causing sessionInfo() to return only errors. This typically occurs because of a lack of reversibility in the original package's design. Currently timeDate can break irreversi...
How do you import a large MS SQL .sql file?
..., and when I try to open the file in SQL Server Management Studio I get an error about the file being too large.
11 Answers...
How to redirect the output of a PowerShell to a file during its execution
... stop it if it's already running, then start it, and stop it when done.
$ErrorActionPreference="SilentlyContinue"
Stop-Transcript | out-null
$ErrorActionPreference = "Continue"
Start-Transcript -path C:\output.txt -append
# Do some stuff
Stop-Transcript
You can also have this running while worki...