大约有 40,000 项符合查询结果（耗时：0.0206秒） [XML]
Find commit by hash SHA in Git
... to find a commit in Git by a given hash, SHA. For example, if I have the "a2c25061" hash, and I need to get the author and the committer of this commit.
...
filter for complete cases in data.frame using dplyr (case-wise deletion)
... passing it to the filter.
Another benchmark with more columns:
set.seed(123)
x <- sample(1e5,1e5*26, replace = TRUE)
x[sample(seq_along(x), 1e3)] <- NA
df <- as.data.frame(matrix(x, ncol = 26))
library(microbenchmark)
microbenchmark(
na.omit = {df %>% na.omit},
filter.anonymous = ...
Undo a merge by pull request?
...om.com>
Date: Mon Apr 29 06:12:38 2013 -0700
Merge pull request #123 from john/foo_and_bar
Add foo and bar
commit a507888e9fcc9e08b658c0b25414d1aeb1eef45e
Author: John Doe <john@doe.com>
Date: Mon Apr 29 12:13:29 2013 +0000
Add bar
commit 470ee0f407198057d5cb1d6427bb837...
How to convert an array into an object using stdClass() [duplicate]
... |
edited Dec 6 '15 at 11:55
Davide Pastore
8,2071010 gold badges3636 silver badges4949 bronze badges
...
Undoing a 'git push'
...mmit:branch_name
– philfreo
Aug 29 '11 at 23:16
5
git push -f origin cc4b63bebb6:alpha-0.3.0 =>...
Excel: last character/string match in a string
...-------------------------|----------|
| XYYZ | Y | =MATCH(2,1/(MID(A2,SEQUENCE(LEN(A2)),1)="Y")) | 3 |
| XYYYZ | YY | =MATCH(2,1/(MID(A3,SEQUENCE(LEN(A3)),2)="YY")) | 3 |
| XYYYYZ | YY | =MATCH(2,1/(MID(A4,SEQUENCE(LEN(A4)),2)="YY")) | 4 |
Whilst this bot...
equals vs Arrays.equals in Java
...gt;.<p>
*
* @param a one array to be tested for equality
* @param a2 the other array to be tested for equality
* @return <tt>true</tt> if the two arrays are equal
*/
public static boolean equals(Object[] a, Object[] a2) {
if (a==a2)
return true;
if (a==null || ...
JavaScript string encryption and decryption?
...lare.com/ajax/libs/crypto-js/3.1.2/rollups/aes.js" integrity="sha256-/H4YS+7aYb9kJ5OKhFYPUjSJdrtV6AeyJOtTkw6X72o=" crossorigin="anonymous"></script>
<br><br>
<label>encrypted</label>
<div id="demo1"></div>
<br>
<label>decrypted</la...
MLKitCodeScanner 拓展：离线条码 / 二维码识别 · App Inventor 2 中文网
...-v7a + x86 + x86_64（含模拟器）。
.aix 拓展下载：
cn.fun123.MLKit.CodeScanner.aix
快速上手
一、扫图片里的二维码
设计器里放一个 MLKitCodeScanner、一个按钮、一个标签，再放一个「图像选择器」...
How to avoid overflow in expr. A * B - C * D
...tion as below:
(R1 + R2 * 2^32 + R3 * 2^64 + R4 * 2^96) = R = A*B = (A1 + A2 * 2^32) * (B1 + B2 * 2^32)
R1 = (A1*B1) % 2^32
R2 = ((A1*B1) / 2^32 + (A1*B2) % 2^32 + (A2*B1) % 2^32) % 2^32
R3 = (((A1*B1) / 2^32 + (A1*B2) % 2^32 + (A2*B1) % 2^32) / 2^32 + (A1*B2) / 2^32 + (A2*B1) / 2^32 + (A2*B2) % 2...