大约有 40,000 项符合查询结果（耗时：0.0705秒） [XML]
Finding all cycles in a directed graph
...nyone using python for this: the Johnson algorithm is implemented as simple_cycle in networkx.
– Joel
Feb 12 '16 at 21:15
|
show 6 more comm...
Xcode without Storyboard and ARC
... isn't the UINavigationController *nav not autoreleased? and we should use _window in [UIWindow alloc]?
– hariszaman
Jul 31 '14 at 9:44
...
Java: Integer equals vs. ==
...ison with == only works for numbers between -128 and 127.
Refer: #Immutable_Objects_.2F_Wrapper_Class_Caching
share
|
improve this answer
|
follow
|
...
How to convert JSON to a Ruby hash
...
You could also use Rails' with_indifferent_access method so you could access the body with either symbols or strings.
value = '{"val":"test","val1":"test1","val2":"test2"}'
json = JSON.parse(value).with_indifferent_access
then
json[:val] #=> "tes...
Generate a random double in a range
...y correct, but beware of its limits. If you do double rangeMax= Double.MAX_VALUE; and double rangeMin= -rangeMax; you will always get an infinite value in return. You might want to check for Double.valueOf(rangeMax-rangeMin).isInfinite().
– lre
Apr 7 '14 at 1...
Scale image to fit a bounding box
...
Test it here: http://www.w3schools.com/cssref/playit.asp?filename=playcss_background-size&preval=contain
Full compatibility with latest browsers: http://caniuse.com/background-img-opts
To align the div in the center, you can use this variation:
.bounding-box {
background-image: url(...);
...
Using Vim's persistent undo?
...eep undo history across sessions by storing it in a file
if has('persistent_undo')
let myUndoDir = expand(vimDir . '/undodir')
" Create dirs
call system('mkdir ' . vimDir)
call system('mkdir ' . myUndoDir)
let &undodir = myUndoDir
set undofile
endif
...
How can I get column names from a table in Oracle?
...nfused with data in the table. For example, if I have a table named EVENT_LOG that contains eventID , eventType , eventDesc , and eventTime , then I would want to retrieve those field names from the query and nothing else.
...
Malloc vs new — different padding
...en windows and linux. links about gcc: gcc.gnu.org/onlinedocs/gcc/Structure_002dPacking-Pragmas.html
– Stephane Rolland
Nov 20 '12 at 10:01
...
Android. WebView and loadData
...ings();
settings.setDefaultTextEncodingName("utf-8");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
String base64 = Base64.encodeToString(htmlString.getBytes(), Base64.DEFAULT);
myWebView.loadData(base64, "text/html; charset=utf-8", "base64");
} else {
String header = "<...