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How can I print literal curly-brace characters in python string and also use .format on it?
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You need to double the {{ and }}:
>>> x = " {{ Hello }} {0} "
>>> print(x.format(42))
' { Hello } 42 '
Here's the relevant part of the Python documentation for format string syntax:
Format strings contain “replacement fields” surrounded by curly braces {}. Anythi...
lua和c/c++互相调用实例分析 - C/C++ - 清泛网 - 专注C/C++及内核技术
... do{printf("[%s:%d]"fmt"\n",__FILE__,__LINE__,##args);exit(num);} while(0)
#define err_return(num,fmt,args) \
do{printf("[%s:%d]"fmt"\n",__FILE__,__LINE__,##args);return(num);} while(0)
//lua中调用的c函数定义,实现加法
int csum(lua_State* l)
{
int a = lua_tointeger(l,1...
Checking to see if one array's elements are in another array in PHP
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205
You can use array_intersect().
$result = !empty(array_intersect($people, $criminals));
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How do I get the different parts of a Flask request's url?
I want to detect if the request came from the localhost:5000 or foo.herokuapp.com host and what path was requested. How do I get this information about a Flask request?
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Creating range in JavaScript - strange syntax
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+1000
Understanding this "hack" requires understanding several things:
Why we don't just do Array(5).map(...)
How Function.prototype.app...
Scala: what is the best way to append an element to an Array?
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206
You can use :+ to append element to array and +: to prepend it:
0 +: array :+ 4
should produ...
Is there an expression for an infinite generator?
...gument iter = zero-argument callable + sentinel value
int() always returns 0
Therefore, iter(int, 1) is an infinite iterator. There are obviously a huge number of variations on this particular theme (especially once you add lambda into the mix). One variant of particular note is iter(f, object()),...
What characters are valid for JavaScript variable names?
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1000
+50
To quot...
awk without printing newline
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answered Jan 7 '10 at 16:56
CodeRainCodeRain
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Add subdomain to localhost URL
...en (as root) the file /etc/hosts and add a line (or lines) like this:
127.0.0.1 example.com
127.0.0.1 subdomain.example.com
Your computer will now treat both example.com and subdomain.example.com as belonging to itself. If you visit either in your web browser, they will work the same, in pr...