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In Typescript, How to check if a string is Numeric
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Update 2
This method is no longer available in rxjs v6
I'm solved it by using the isNumeric operator from rxjs library (importing rxjs/util/isNumeric
Update
import { isNumeric } from 'rxjs/util/isNumeric';
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var val = "5700";
if (isNumeric(val)){
alert("it is number !");
}
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What is the maximum length of a table name in Oracle?
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In Oracle 12.2 and above the maximum object name length is 128 bytes.
In Oracle 12.1 and below the maximum object name length is 30 bytes.
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Why can't R's ifelse statements return vectors?
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Here is an approach similar to that suggested by Cath, but it can work with existing pre-assigned vectors
It is based around using the get() like so:
a <- c(1,2)
b <- c(3,4)
get(ifelse(TRUE, "a", "b"))
# [1] 1 2
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UITextField border color
...go into your code (for example in viewDidLoad) and change these properties by saying self.myTextField.layer.cornerRadius etc. These changes will take effect as soon as you launch your app, but you cannot see the changes in the Storyboard. If this doesn't make any sense to you, I suggest you go to ...
How can I change the language (to english) in Oracle SQL Developer?
...developer-nondebug.conf
To switch off language try to remove its support by editing oracle.translated.locales option in ide.boot file (located in ide\bin folder).
For example, if I want to 'break' french language support this option will be:
oracle.translated.locales = de,es,it,ja,ko,pt_BR,zh_CN...
Choosing the best concurrency list in Java [closed]
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You might want to look at ConcurrentDoublyLinkedList written by Doug Lea based on Paul Martin's "A Practical Lock-Free Doubly-Linked List". It does not implement the java.util.List interface, but offers most methods you would use in a List.
According to the javadoc:
A concurrent l...
Check if a path represents a file or a folder
... the file and folder entries are kept in a data structure and it's managed by the file system.
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What is Clojure useful for? [closed]
...ally and professionally - C, C++, Objective-C, Java, JavaScript, Python, Ruby.
Which isn't to say Clojure is perfect. But it seems to me that it's built on a better foundation than most of what's out there.
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How to echo or print an array in PHP?
... @Robin <pre> tag displays new lines and tabulation as it's outputed by print_r(); without <pre> you would see a messy unformatted bounds of data. To see it formatted you should then view the html page source.
– j.c
Sep 29 '16 at 9:00
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...老师做的一手好DD(尽职调查)啊！
2. 创业基本模式 by C叔
常玩微博的读者，会发现微博上有两种典型的互联网创业者 (段子，请勿对号入座)
土鳖型：
211学校B-/C+理工IT狗；
原始积累来自于校园内卖假货；
吹牛百倍起，...