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How to map and remove nil values in Ruby
...ct it to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your case, as the block evaluates to falsey, simply:
items.filter_map { |x| process_x url }
"Ruby 2.7 adds Enumerable#filter_map" is a good read on t...
Is there a way to follow redirects with command line cURL?
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answered Aug 27 '13 at 20:24
Nathan KuchtaNathan Kuchta
11.1k22 gold badges2323 silver badges3333 bronze badges
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How do you install ssh-copy-id on a Mac?
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edited Jul 20 '16 at 19:50
answered Sep 4 '14 at 4:52
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Android TextWatcher.afterTextChanged vs TextWatcher.onTextChanged
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answered May 14 '11 at 18:03
MalcolmMalcolm
37.7k1010 gold badges6565 silver badges8787 bronze badges
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Toggle button using two image on different state
..."@drawable/check" <!--check.xml-->
android:layout_margin="10dp"
android:textOn=""
android:textOff=""
android:focusable="false"
android:focusableInTouchMode="false"
android:layout_centerVertical="true"/>
create check.xml in drawable folder
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MFC CString::Format()函数详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...输出实数
g选用f与e格式中输出宽度较小的格式，不输出0
ld输入输出long型数据
lf输入输出double型数据
m数据输出宽度为m
.n输出小数位数为n
2、Args是一个变体数组，即它里面可以有多个参数，而且每个参数可以不同。
如...
how to make a specific text on TextView BOLD
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390
Just build your String in HTML and set it:
String sourceString = "<b>" + id + "</b>...
How to set limits for axes in ggplot2 R plots?
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Basically you have two options
scale_x_continuous(limits = c(-5000, 5000))
or
coord_cartesian(xlim = c(-5000, 5000))
Where the first removes all data points outside the given range and the second only adjusts the visible area. In most cases you would not see the difference, but if ...
Static implicit operator
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270
This is a conversion operator. It means that you can write this code:
XmlBase myBase = new XmlB...
MYSQL Dump only certain rows
...ion. It should be a valid SQL WHERE clause, like:
--where="date_pulled='2011-05-23'"
You have the column name outside of the quotes.
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