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How do you create optional arguments in php?
...ument must be a constant expression. It can't be a variable or a function call.
If you need this functionality however:
function foo($foo, $bar = false)
{
if(!$bar)
{
$bar = $foo;
}
}
Assuming $bar isn't expected to be a boolean of course.
...
初窥InnoDB的Memcached插件 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...据：
INSERT INTO `users` (`username`, `password`, `email`)
VALUES
('foo', 'ffffffffffffffffffffffffffffffff', 'foo@domain.com'),
('bar', 'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb', 'bar@domain.com');
接着在containers里配置这个表：
INSERT INTO innodb_memcache.containers (
name, db_...
Creating an empty file in Ruby: “touch” equivalent?
...
If you are worried about file handles:
File.open("foo.txt", "w") {}
From the docs:
If the optional code block is given, it will be passed the opened file
as an argument, and the File object will automatically be closed when
the block terminates.
...
How to split (chunk) a Ruby array into parts of X elements? [duplicate]
...
Take a look at Enumerable#each_slice:
foo.each_slice(3).to_a
#=> [["1", "2", "3"], ["4", "5", "6"], ["7", "8", "9"], ["10"]]
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Difference between parameter and argument [duplicate]
...d actual parameter etc.
So here, x and y would be formal parameters:
int foo(int x, int y) {
...
}
Whereas here, in the function call, 5 and z are the actual arguments:
foo(5, z);
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Using a string variable as a variable name [duplicate]
...
You can use exec for that:
>>> foo = "bar"
>>> exec(foo + " = 'something else'")
>>> print bar
something else
>>>
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imp...
Swift equivalent of [NSBundle bundleForClass:[self class]]
... class inside your value type. Example of the latter solution: Bundle(for: Foo.Bar.self) where Foo - your struct, Bar - some inner class.
– Vadim Bulavin
Apr 24 '17 at 13:37
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sqlite 命令行创建一个空库 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...的SQLite数据库的优势，比touch创建一个空文件好。$sqlite3 foo db "create table t(f int); drop table t;"可以通过以下方 SQLite创建一个空白的数据库，具有被识别为有效的SQLite数据库的优势，比touch创建一个空文件好。
$sqlite3 foo.db "create t...
Android preferences onclick event
...
Where shall i place this? in my SettingsActivity in onPostCreate wont work because it is too early(Nullpointer-Exception). Any help is appreciated
– Wandang
Feb 21 '13 at 18:28
...
Default value in Go's method
...s on the subject, but here are some specific examples.
**Option 1:** The caller chooses to use default values
// Both parameters are optional, use empty string for default value
func Concat1(a string, b int) string {
if a == "" {
a = "default-a"
}
if b == 0 {
b = 5
}
return fmt.S...