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How do I do base64 encoding on iOS?
..., 'p', 'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
};
@implementation NSString (NSStringAdditions)
+ (NSString *) base64StringFromData: (NSData *)data length: (int)length {
unsigned long ixtext, lentext;
long ctremaining;
uns...
Using jQuery to compare two arrays of Javascript objects
...s are in different order.
NOTE: This works only for jquery versions < 3.0.0 when using JSON objects
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How to store standard error in a variable
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93
It would be neater to capture the error file thus:
ERROR=$(</tmp/Error)
The shell recogniz...
【HarmonyOS】编译、测试全流程 - HarmonyOS NEXT - 清泛IT社区，为创新赋能！
...ofile需Profile配置文件证书有效期自定义（建议25年+）1年1-3年（取决于类型）
二、准备工作：华为开发者账号
1. 访问 华为开发者联盟 注册账号
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对比项A...
What is the difference between print and puts?
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381
puts adds a new line to the end of each argument if there is not one already.
print does not...
Insert a line at specific line number with sed or awk
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243
sed -i '8i8 This is Line 8' FILE
inserts at line 8
8 This is Line 8
into file FILE
-i doe...
Remove rows with all or some NAs (missing values) in data.frame
...ul mmus rnor cfam
2 ENSG00000199674 0 2 2 2 2
6 ENSG00000221312 0 1 2 3 2
na.omit is nicer for just removing all NA's. complete.cases allows partial selection by including only certain columns of the dataframe:
> final[complete.cases(final[ , 5:6]),]
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Get column index from column name in python pandas
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388
Sure, you can use .get_loc():
In [45]: df = DataFrame({"pear": [1,2,3], "apple": [2,3,4], "or...
Specifying rails version to use when creating a new application
...
edited Sep 20 '11 at 16:23
Paweł Gościcki
7,05755 gold badges5555 silver badges7474 bronze badges
ans...
Numpy array dimensions
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513
It is .shape:
ndarray.shape
Tuple of array dimensions.
Thus:
>>> a.shape
(2, 2...