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How do I trim whitespace?
...
For leading and trailing whitespace:
s = ' foo \t '
print s.strip() # prints "foo"
Otherwise, a regular expression works:
import re
pat = re.compile(r'\s+')
s = ' \t foo \t bar \t '
print pat.sub('', s) # prints "foobar"
...
What is the correct JSON content type?
...oding is UTF-8. (Source: RFC 4627).
For JSONP (runnable JavaScript) with callback:
application/javascript
Here are some blog posts that were mentioned in the relevant comments:
Why you shouldn't use text/html for JSON
Internet Explorer sometimes has issues with application/json
A rather complete ...
Spring 3 RequestMapping: Get path value
...WITHIN_HANDLER_MAPPING_ATTRIBUTE:
@RequestMapping("/{id}/**")
public void foo(@PathVariable("id") int id, HttpServletRequest request) {
String restOfTheUrl = (String) request.getAttribute(
HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
...
}
...
How do Third-Party “tracking cookies” work?
...com, then the response might come back with a header that says Set-Cookie: foo=bar. Your browser stores this cookie, and on any subsequent requests to http://example.com, your browser will send foo=bar in the Cookie header. (Or at least until the cookie expires or is deleted.) The browser sends the ...
Linq to SQL how to do “where [column] in (list of values)”
... @KiranSolkar: Then presumably codeIDs would be a List<int>, and all would be fine.
– Jon Skeet
Dec 3 '16 at 8:59
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Using the Swift if let with logical AND operator &&
... or declaration. You can't have both expression and declaration.
let foo = bar is a declaration, it doesn't evaluate to a value that conforms to BooleanType. It declares a constant/variable foo.
Your original solution is good enough, it is much more readable then combining the conditions.
...
The property 'value' does not exist on value of type 'HTMLElement'
...ent. Similarly in statically typed Java this won't compile:
public Object foo() {
return 42;
}
foo().signum();
signum() is a method of Integer, but the compiler only knows the static type of foo(), which is Object. And Object doesn't have a signum() method.
But the compiler can't know that, i...
Return first N key:value pairs from dict
...ts as
import itertools
import collections
d = collections.OrderedDict((('foo', 'bar'), (1, 'a'), (2, 'b'), (3, 'c'), (4, 'd')))
x = itertools.islice(d.items(), 0, 4)
for key, value in x:
print key, value
itertools.islice allows you to lazily take a slice of elements from any iterator. If yo...
What does the “@” symbol do in Powershell?
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PowerShell will actually treat any comma-separated list as an array:
"server1","server2"
So the @ is optional in those cases. However, for associative arrays, the @ is required:
@{"Key"="Value";"Key2"="Value2"}
Officially, @ is the "array ...
MySQL Select all columns from one table and some from another table
How do you select all the columns from one table and just some columns from another table using JOIN? In MySQL.
4 Answers
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