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MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
..., "age" : 20, "name" : "kobe" }
{ "_id" : ObjectId("5031144a50f2481577ea81e6"), "classid" : 1, "age" : 23, "name" : "nash" }
{ "_id" : ObjectId("5031145a50f2481577ea81e7"), "classid" : 2, "age" : 18, "name" : "james" }
{ "_id" : ObjectId("5031146a50f2481577ea81e8"), "classid" : 2, "age" : 19, "na...
How to convert an array into an object using stdClass() [duplicate]
...'prenume' => 'Alice', 'sex' => 'f', 'varsta' => 22),
'e4' => array('nume' => 'Geangos', 'prenume' => 'Bogdan', 'sex' => 'm', 'varsta' => 23),
'e5' => array('nume' => 'Vasile', 'prenume' => 'Mihai', 'sex' => 'm', 'varsta' => 25)
);
If y...
Check whether an input string contains a number in javascript
... this solution doesn't take into account non-integer numbers like 3.2 or 1e4
– ekkis
Jan 12 '17 at 21:05
8
...
How do I find the next commit in git? (child/children of ref)
... in time, use something like
git log --reverse --ancestry-path 894e8b4e93d8f3^..master
where 894e8b4e93d8f3 is the first commit you want to show.
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推荐引擎easyrec半天学习分享 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
....getJSON(
"/easyrec-web/api/1.0/json/otherusersalsoviewed?apikey=32b0c25e6bc63bf1627dc7e877f81b3d&tenantid=EASYREC_DEMO&itemid=43",
function(transport) {
var json = eval(transport);
var items = json.recommendeditems.item;
if( "undefined" == typeof(items.length) ) {
items = new Arr...
BLE 低功耗蓝牙调试助手：扫描、连接、读写、订阅通知（附 .aia 源码） · ...
...进制点「发送」。
中途验证：日志里出现 收 你好↵ [E4 BD A0 E5 A5 BD 0A] 这样的行，前面是文本、方括号里是原始字节。
下次打开 App，点「重连 设备名」会先扫描、扫到后自动连上。
核心代码
完整积木在 ...
Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
...faster than drop:
%%timeit
test = pd.DataFrame({'x': np.random.randn(int(1e6))})
test = test[test.x < 0]
# 54.5 ms ± 2.02 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)
%%timeit
test = pd.DataFrame({'x': np.random.randn(int(1e6))})
test.drop(test[test.x > 0].index, inplace=True)
#...
What is the difference between “expose” and “publish” in Docker?
...bash
Inside the container, I launch a few instances of mini-httpd:
root@fb8f7dd1322d:/# mini_httpd -p 80
root@fb8f7dd1322d:/# mini_httpd -p 8080
root@fb8f7dd1322d:/# mini_httpd -p 8090
I am then able to use curl from the host or other containers to fetch the home page of mini-httpd.
Further readi...
Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V
... 2, 3, 4, 5, 6, 9, 12, 16, 20, 27, 36, 48, 64, 81)[n]
e3 = (4 - n) % 5
e4 = n // 5 - e3
return 4 * (4 ** e4) * (3 ** e3)
Calculating e3:
There are always between 0 and 4 SCPP patterns at the end of the keystroke list, for n % 5 == 4 there are 4, n % 5 == 1 there are 3, n % 5 == 2 there are 2...
How to debug Lock wait timeout exceeded on MySQL?
...x 36646234376337652d376630302d303030312d353166322d3431326132346664656366352e6d7033; asc 6db47c7e-7f00-0001-51f2-412a24fdecf5.mp3;; 7: len 21; hex 416e67656c73204e6f7720436f6e666572656e6365; asc Angels Now Conference;; 8: len 34; hex 416e67656c73204e6f7720436f6e666572656e6365204a756c7920392c203230313...