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StringBuilder vs String concatenation in toString() in Java
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Version 1 is preferable because it is shorter and the compiler will in fact turn it into version 2 - no performance difference whatsoever.
More importantly given we have only 3
properties it might not make a
difference, but at what point do you
sw...
What are the uses of the exec command in shell scripts? [closed]
...n anyone explain what are the uses of the exec command in shell scripting with simple examples?
2 Answers
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Differences between Proxy and Decorator Pattern
...corators have a different purpose. A decorator adds one or more responsibilities to an object, whereas a proxy controls access to an object.
Proxies vary in the degree to which they are implemented like a decorator. A
protection proxy might be implemented exactly like a decorator. On the othe...
Build tree array from flat array in javascript
I have a complex json file that I have to handle with javascript to make it hierarchical, in order to later build a tree.
Every entry of the json has :
id : a unique id,
parentId : the id of the parent node (which is 0 if the node is a root of the tree)
level : the level of depth in the tree
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What is the difference between char s[] and char *s?
In C, one can use a string literal in a declaration like this:
13 Answers
13
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How do I load an HTML page in a using JavaScript?
...follow
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edited Jan 21 '19 at 13:14
Neuron
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In Clojure how can I convert a String to a number?
...n 10px or px10
(defn parse-int [s]
(Integer. (re-find #"\d+" s )))
it will parse the first continuous digit only so
user=> (parse-int "10not123")
10
user=> (parse-int "abc10def11")
10
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When should I use mmap for file access?
...accessing files. There's the standard system calls open() , read() , write() , and friends, but there's also the option of using mmap() to map the file into virtual memory.
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Checking for empty arrays: count vs empty
...nswered Feb 7 '10 at 6:21
prodigitalsonprodigitalson
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Why can't I use a list as a dict key in python?
I'm a bit confused about what can/can't be used as a key for a python dict.
11 Answers
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