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What does enumerable mean?
...re that it's within the object.
var obj = { key: 'val' };
console.log('toString' in obj); // true
console.log(typeof obj.toString); // "function"
for (var key in obj)
console.log(key); // "key"
A property is identified as enumerable or not by its own [[Enumerable]] attribute. You can view...
How to get all subsets of a set? (powerset)
... you need to modify the resulting output (e.g. joining the letters to form strings) writing a custom recipe utilizing generators and building up the output you want (e.g. adding together two strings) can be much faster.
– Ceasar Bautista
Feb 23 '18 at 7:48
...
sqlite alter table add MULTIPLE columns in a single statement
...und for adding multiple columns using the benefit of transactions in SQL.
String alterTableQuery = "ALTER TABLE " + TABLE_NAME + " ADD COLUMN ";
List<String> newColumns = ..// Your new columns
db.beginTransaction();
for (String column : newColumns){
db.execSQL(alterTableQuery + column + ...
How to find where a method is defined at runtime?
...ou're on Ruby 1.9+, you can use source_location
require 'csv'
p CSV.new('string').method(:flock)
# => #<Method: CSV#flock>
CSV.new('string').method(:flock).source_location
# => ["/path/to/ruby/1.9.2-p290/lib/ruby/1.9.1/forwardable.rb", 180]
Note that this won't work on everything, l...
From io.Reader to string in Go
...
EDIT:
Since 1.10, strings.Builder exists. Example:
buf := new(strings.Builder)
n, err := io.Copy(buf, r)
// check errors
fmt.Println(buf.String())
OUTDATED INFORMATION BELOW
The short answer is that it it will not be efficient because co...
How to write to a file, using the logging Python module?
...places with leading zeros
#4s would work as well, but would simply pad the string with leading spaces, right justify
#-4s would work as well, but would simply pad the string with trailing spaces, left justify
#filename is the file name from where the call to log is made
#funcName is the method name ...
Case-insensitive string comparison in C++ [closed]
What is the best way of doing case-insensitive string comparison in C++ without transforming a string to all uppercase or all lowercase?
...
How to enumerate an object's properties in Python?
... in Python), use
my_dict.keys()
my_dict = {'abc': {}, 'def': 12, 'ghi': 'string' }
my_dict.keys()
> ['abc', 'def', 'ghi']
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How to create a inset box-shadow only on one side?
...off. (Here is screen shot goo.gl/aO8ZX) I have try it myself and used some extra div to hide the shadow... jsfiddle.net/KFrun/19
– Fabian N.
Jul 10 '13 at 14:40
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Why do I get a segmentation fault when writing to a “char *s” initialized with a string literal, but
...
Q: What is the difference between these initializations?
char a[] = "string literal";
char *p = "string literal";
My program crashes if I try to assign a new value to p[i].
A: A string literal (the formal term
for a double-quoted string in C
source) can be used in two slightly
...