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What does 'var that = this;' mean in JavaScript?
...ecially if the functions are longer than a couple of lines. I always use a more descriptive alias. In my examples above, I'd probably use clickedEl.
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String concatenation: concat() vs “+” operator
...ion but a+=b will treat the original value of a as if it were null. Furthermore, the concat() method only accepts String values while the + operator will silently convert the argument to a String (using the toString() method for objects). So the concat() method is more strict in what it accepts.
To...
Clojure: reduce vs. apply
....
+ is itself implemented in terms of reduce for the variable-arity case (more than 2 arguments). Indeed, this seems like an immensely sensible "default" way to go for any variable-arity, associative function: reduce has the potential to perform some optimisations to speed things up -- perhaps thro...
Shell command to sum integers, one per line?
... going to be adding anything exceeding 2^31 (2147483647). See comments for more background. One suggestion is to use printf rather than print:
awk '{s+=$1} END {printf "%.0f", s}' mydatafile
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What is the difference between the HashMap and Map objects in Java?
...ap<String, Object> things;
private HashMap<String, Object> moreThings;
protected HashMap<String, Object> getThings() {
return this.things;
}
protected HashMap<String, Object> getMoreThings() {
return this.moreThings;
}
public Foo() {...
When to use thread pool in C#? [closed]
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How do I iterate over a range of numbers defined by variables in Bash?
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Gson: How to exclude specific fields from Serialization without annotations
...ed json give it a transient keyword, eg:
private transient String name;
More details in the Gson documentation
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What is the difference between 'E', 'T', and '?' for Java generics?
...wish to learn about it through the following resources, although there are more available of course:
Java Tutorial on Generics
Language guide to generics
Generics in the Java programming language
Angelika Langer's Java Generics FAQ (massive and comprehensive; more for reference though)
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What's the difference between MyISAM and InnoDB? [duplicate]
...you need the database to support transactions (i.e. changes made by two or more DML operations handled as single unit of work, with all of the changes either applied, or all the changes reverted) then you would choose the InnoDB engine, since these features are absent from the MyISAM engine.
Those a...