大约有 40,000 项符合查询结果（耗时：0.0458秒） [XML]
Error handling in Bash
... trap!
tempfiles=( )
cleanup() {
rm -f "${tempfiles[@]}"
}
trap cleanup 0
error() {
local parent_lineno="$1"
local message="$2"
local code="${3:-1}"
if [[ -n "$message" ]] ; then
echo "Error on or near line ${parent_lineno}: ${message}; exiting with status ${code}"
else
echo "E...
How to loop backwards in python? [duplicate]
...
302
range() and xrange() take a third parameter that specifies a step. So you can do the following....
What are the best Haskell libraries to operationalize a program? [closed]
...4,952 bytes allocated in the heap
1 MB total memory in use
%GC time 0.0% (6.1% elapsed)
Productivity 100.0% of total user, 0.0% of total elapsed
You can get this in machine-readable format too:
$ ./A +RTS -t --machine-readable
[("bytes allocated", "64952")
,("num_GCs", "1")
,("averag...
not None test in Python [duplicate]
...
1033
if val is not None:
# ...
is the Pythonic idiom for testing that a variable is not set t...
Determine whether an array contains a value [duplicate]
...
1005
var contains = function(needle) {
// Per spec, the way to identify NaN is that it is not e...
android EditText - finished typing event
...
answered Nov 9 '11 at 10:19
RenoReno
32.5k1111 gold badges8383 silver badges9999 bronze badges
...
Convert decimal to binary in python [duplicate]
... representation of a given number in binary, use bin(i)
>>> bin(10)
'0b1010'
>>> 0b1010
10
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Force CloudFront distribution/file update
...e API Reference.
This is a sample request from the API Reference:
POST /2010-08-01/distribution/[distribution ID]/invalidation HTTP/1.0
Host: cloudfront.amazonaws.com
Authorization: [AWS authentication string]
Content-Type: text/xml
<InvalidationBatch>
<Path>/image1.jpg</Path>...
Reusable library to get human readable version of file size?
...unit in ['','Ki','Mi','Gi','Ti','Pi','Ei','Zi']:
if abs(num) < 1024.0:
return "%3.1f%s%s" % (num, unit, suffix)
num /= 1024.0
return "%.1f%s%s" % (num, 'Yi', suffix)
Supports:
all currently known binary prefixes
negative and positive numbers
numbers larger than...
JavaScript file upload size validation
...rt the `files` property of file inputs.");
}
else if (!input.files[0]) {
bodyAppend("p", "Please select a file before clicking 'Load'");
}
else {
file = input.files[0];
bodyAppend("p", "File " + file.name + " is " + file.size + " bytes in size");
}
}
func...