大约有 26 项符合查询结果（耗时：0.0280秒） [XML]
How to drop columns using Rails migration
...
938
remove_column :table_name, :column_name
For instance:
remove_column :users, :hobby
would ...
Check orientation on Android phone
...otation: 90
CONDITION[11:35:06.312] screen: rotation: 0
CONDITION[11:35:07.938] screen: rotation: 90
CONDITION[11:35:09.336] screen: rotation: 0
On the other hand, width() and height() is always correct (it is used by window manager, so it should better be). I'd say the best idea is to do the widt...
Can I change the fill color of an svg path with CSS?
...9-15.672c27.145-49.699,70.838-99.782,70.838-149.104v-20.262 C363.209,126.938,356.581,108.204,356.208,107.051z M214.245,199.193c-19.107,0-40.021-9.554-50.344-35.939 c-1.538-4.2-1.414-12.617-1.414-13.388v-11.852c0-33.636,28.56-48.932,53.406-48.932c30.588,0,54.245,24.472,54.245,55.06 C270.138,174...
Calling remove in foreach loop in Java [duplicate]
...
938
To safely remove from a collection while iterating over it you should use an Iterator.
For ex...
Why is my program slow when looping over exactly 8192 elements?
...ointer[i]=(*(imgPointer1++)+*(imgPointer2++)+*(imgPointer3++))/9;
}
8193: 938 ms
8192: 974 ms
Two pass using a 1D array and addressing like this:
for(i=SIZE;i<totalSize-SIZE;i++){
resPointer[i]=(hsumPointer[i-SIZE]+hsumPointer[i]+hsumPointer[i+SIZE])/9;
}
8193: 932 ms
8192: 925 ms
One ...
Gzip versus minify
...fied 99,735 (58.6% of original)
Gzipped 46,501 (27.3%)
Minified+Gzipped 27,938 (16.4%)
Before anyone jumps the gun, this is not a battle of JS libraries.
As you can see, minifying+gzipping gives you better compression on large files. Minifying code has its advantages, but the major factor is how ...
How do I read / convert an InputStream into a String in Java?
...h 182 546 1092 3276 9828 29484 58968
test8 0.38 0.938 1.868 4.448 13.412 36.459 72.708
test4 2.362 3.609 5.573 12.769 40.74 81.415 159.864
test5 3.881 5.075 6.904 14.123 50.258 129.937 166.162
test9 2.237 3.493 5.422 11.977 45.98 89.3...
Why is this F# code so slow?
...he following numbers:
> levenshtein str ("foo" + str);;
Real: 00:00:03.938, CPU: 00:00:03.900, GC gen0: 275, gen1: 1, gen2: 0
val it : int = 3
> levenshtein_inlined str ("foo" + str);;
Real: 00:00:00.068, CPU: 00:00:00.078, GC gen0: 0, gen1: 0, gen2: 0
val it : int = 3
...
Encrypt Password in Configuration Files? [closed]
...heseKeys=secretKey,anotherSecret
secretKey=crypt:ii4jfj304fjhfj934fouh938
anotherSecret=crypt:jd48jofh48h
someKey=unprotectedSettingIdontCareAbout
Just make sure to keep the originals in your own secure place...
...
How to declare a friend assembly?
...0040000010001008179f2dd31a648"+
"2a2359dbe33e53701167a888e7c369a9ae3210b64f93861d8a7d286447e58bc167e3d99483beda"+
"72f738140072bb69990bc4f98a21365de2c105e848974a3d210e938b0a56103c0662901efd6b78"+
"0ee6dbe977923d46a8fda18fb25c65dd73b149a5cd9f3100668b56649932dadd8cf5be52eb1dce"+
"ad5cedbf")]
The pub...