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Why does instanceof return false for some literals?
...e
var color2 = "coral";
color2 instanceof String; // returns false (color2 is not a String object)
I can't find any way to construct primitive types with code, perhaps it's not possible. This is probably why people use typeof "foo" === "string" instead of instanceof.
An easy way to remember thing...
What exactly is Python's file.flush() doing?
I found this in the Python documentation for File Objects :
4 Answers
4
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What are some uses of decltype(auto)?
In c++14 the decltype(auto) idiom is introduced.
2 Answers
2
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Javascript web app and Java server, build all in Maven or use Grunt for web app?
...he most popular are JAWR and Wro4J. The biggest problem with both of these is that they are mostly Rhino based (WRO4J now has some Node support) and Rhino is dog slow compared to Node based tools. You also have to consider that the JavaScript tooling is rapidly maturing so you should be looking for ...
Should I pass an std::function by const-reference?
...by value if you are storing it.
Suppose you have a function called "run this in the UI thread".
std::future<void> run_in_ui_thread( std::function<void()> )
which runs some code in the "ui" thread, then signals the future when done. (Useful in UI frameworks where the UI thread is whe...
How do I check what version of Python is running my script?
How can I check what version of the Python Interpreter is interpreting my script?
21 Answers
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How to read an external local JSON file in JavaScript?
... a JavaScript file in order to read the JSON file and print data out. Here is the JSON file:
22 Answers
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Why is debugging better in an IDE? [closed]
...have access to the debug symbols)
Change variable values while the program is running
Edit and continue - the ability to change code while it is running and immediately see the results of the change
Be able to watch variables, seeing when they change
Be able to skip or repeat sections of code, to se...
What are the respective advantages/limitations of Amazon RDS vs. EC2 with MySQL? [closed]
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This is a simple question with a very complicated answer!
In short: EC2 will provide maximum performance if you go with a RAID0 EBS. Doing RAID0 EBS requires a pretty significant amount of maintenance overhead, for example:
h...
Correct way to close nested streams and writers in Java [duplicate]
Note: This question and most of its answers date to before the release of Java 7. Java 7 provides Automatic Resource Management functionality for doing this easilly. If you are using Java 7 or later you should advance to the answer of Ross Johnson .
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