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android get all contacts

... Get contacts info , photo contacts , photo uri and convert to Class model 1). Sample for Class model : public class ContactModel { public String id; public String name; public String mobileNumber; public Bitmap photo; public Uri ...
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R command for setting working directory to source file location in Rstudio

... This answer can help: script.dir <- dirname(sys.frame(1)$ofile) Note: script must be sourced in order to return correct path I found it in: https://support.rstudio.com/hc/communities/public/questions/200895567-can-user-obtain-the-path-of-current-Project-s-direct...
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What exactly is Type Coercion in Javascript?

... when the operands of an operator are different types, one of them will be converted to an "equivalent" value of the other operand's type. For instance, if you do: boolean == integer the boolean operand will be converted to an integer: false becomes 0, true becomes 1. Then the two values are comp...
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优惠券批量生成及导入的思路 - 闲聊区 - 清泛IT论坛,有思想、有深度

... mt_rand(0, PHP_INT_MAX);         $m = base_convert($m, 10, 36);  // 主随机         $n = base_convert($n, 10, 36);  // 辅随机         $r = substr($m . $n, 0, 16);     } whi...
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Calculating Pearson correlation and significance in Python

...n is defined on a 2xN matrix. There is no generally applicable method that converts two dictionaries into a 2xN matrix, but you might use the array of pairs of dictionary values corresponding to the keys of the intersection of the keys of your dictionaries. – winerd ...
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Why is unsigned integer overflow defined behavior but signed integer overflow isn't?

...types a special case. Also note that there is an exception if any type is converted to a signed type and the old value can no longer be represented. The behavior is then merely implementation-defined, although a signal may be raised. C11 6.3.1.3 6.3.1.3 Signed and unsigned integers Whe...
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Populating a ListView using an ArrayList?

.../let me assume that you are putting the values in this arraylist //Now convert your arraylist to array //You will get an exmaple here //http://www.java-tips.org/java-se-tips/java.lang/how-to-convert-an-arraylist-into-an-array.html private String arr[]=convert(arrlist); @Overr...
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Sending mail from Python using SMTP

...plain' content="""\ Test message """ subject="Sent from Python" import sys import os import re from smtplib import SMTP_SSL as SMTP # this invokes the secure SMTP protocol (port 465, uses SSL) # from smtplib import SMTP # use this for standard SMTP protocol (port 25, no...
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Wrapping null-returning method in Java with Option in Scala?

... This is a very old topic but a nice one! It's true that converting any Non-exception result of Try to Option will result in a Some... scala> Try(null).toOption res10: Option[Null] = Some(null) ...because Try is not about nullability checking but just a way to functionally ha...
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what is Segmentation fault (core dumped)? [duplicate]

... Also, since you're passing in a float to printf (which, by the way, gets converted to a double when passing to printf), you should use the %f format specifier. The %s format specifier is for strings ('\0'-terminated character arrays). ...