大约有 22,000 项符合查询结果（耗时：0.1165秒） [XML]
JSON.parse vs. eval()
...except that the line right before that verifies that it's a safe and valid string.
– nickf
Apr 20 '10 at 22:56
6
...
Should I use window.navigate or document.location in JavaScript?
... thing. See docs.sun.com/source/816-6408-10/location.htm: "If you assign a string to the location property of an object, JavaScript creates a location object and assigns that string to its href property."
– James Skidmore
Dec 9 '10 at 18:36
...
delete map[key] in go?
...
Strangely enough,
package main
func main () {
var sessions = map[string] chan int{};
delete(sessions, "moo");
}
seems to work. This seems a poor use of resources though!
Another way is to check for existence and use the value itself:
package main
func main () {
var sessions = ...
Shallow copy of a Map in Java
...ap here, but it works for every implementation of the Map interface
Map<String, Object> data = new HashMap<String, Object>();
Map<String, Object> shallowCopy = new HashMap<String, Object>();
shallowCopy.putAll(data);
...
How to open a file for both reading and writing?
...ontent after the specified number of bytes. Imagine that your file has the string Hello, world and you write Bye. If you don't truncate() the content at the end will be Byelo, world, since you never deleted the text that existed in the file. truncate() truncates the file to the current fp.
...
What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
...
From the offical documentation:
raise
raise( string )
raise( exception [, string [, array ] ] )
With no arguments, raises the exception in $! or raises a RuntimeError if $! is nil. With a single String argument, it raises a RuntimeError with the string as a message. O...
How to compare variables to undefined, if I don’t know whether they exist? [duplicate]
...a valid variable, do something here.
}
Note that typeof always returns a string, and doesn't generate an error if the variable doesn't exist at all.
share
|
improve this answer
|
...
Adding a directory to $LOAD_PATH (Ruby)
...
Also, it's a lot harder to Google for strings like "$:" that contain only symbols.
– DSimon
Apr 19 '12 at 3:39
add a comment
...
How to convert list of tuples to multiple lists?
...xs, ys
if __name__ == '__main__':
from timeit import timeit
setup_string='''\
N = 2000000
xs = list(range(1, N))
ys = list(range(N+1, N*2))
zs = list(zip(xs, ys))
from __main__ import t1, t2, t3
'''
print(f'zip:\t\t{timeit('t1(zs)', setup=setup_string, number=1000)}')
print(f'append...
Hyphen, underscore, or camelCase as word delimiter in URIs?
...
any convention for the queryString, for instance ?event_id=1 or ?eventId=1???
– user2727195
Oct 7 '15 at 23:21
...