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How to check edittext's text is email address or not?
...A-Z]{2,4}$";
Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(email);
return matcher.matches();
}
Pass your edit text string in this function .
for right email verification you need server side authentication
Note there is...
How to Correctly handle Weak Self in Swift Blocks with Arguments
...://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/AutomaticReferenceCounting.html
Note: I used the term closure instead of block which is the newer Swift term:
Difference between block (Objective C) and closure (Swift) in ios
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Java : How to determine the correct charset encoding of a stream
... {
return CharsetToolkit.guessEncoding(file, 4096, StandardCharsets.UTF_8);
}
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FloatActionBtn 扩展：悬浮操作按钮扩展，可自定义颜色、大小、图标和位置 ...
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调用 FloatActionBtn1.SetIconFromAsset 设置资源图标为"custom_icon"
调用 FloatActionBtn1.SetFabColor 设置按钮颜色为绿色
调用 FloatActionBtn1.SetIconColor 设置图标颜色为白色
3. 多位置按钮
在不同位置显示悬浮按钮：
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How can I run MongoDB as a Windows service?
...r several hours, I finally did it.
Make sure that you added the <MONGODB_PATH>\bin directory to the system variable PATH
First I executed this command:
D:\mongodb\bin>mongod --remove
Then I executed this command after opening command prompt as administrator:
D:\mongodb\bin>mongod --dbpa...
Why can I throw null in Java? [duplicate]
...ointerException and not a FileNotFoundException
– php_coder_3809625
Aug 24 '16 at 5:50
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Convert InputStream to BufferedReader
...ader br = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8)); added in Java 7
– brcolow
Mar 19 '15 at 21:51
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How to change the docker image installation directory?
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Yes, change this line to DOCKER_OPTS="-dns 8.8.8.8 -dns 8.8.4.4 -g /mnt"
– mbarthelemy
Jun 23 '14 at 17:05
6
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How to format a number as percentage in R?
...s pointed out by @DzimitryM, percent() has been "retired" in favor of label_percent(), which is a synonym for the old percent_format() function.
label_percent() returns a function, so to use it, you need an extra pair of parentheses.
library(scales)
x <- c(-1, 0, 0.1, 0.555555, 1, 100)
label_pe...
Upgrade Node.js to the latest version on Mac OS
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Because you advice to use sudo.
– OZ_
Nov 16 '15 at 20:53
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This works, but: is ...