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What's the difference between == and .equals in Scala?
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So why new java.lang.Integer(1) == new java.lang.Double(1.0) is true while new java.lang.Integer(1) equals new java.lang.Double(1.0) is false?
– Eastsun
Sep 13 '16 at 1:03
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Add missing dates to pandas dataframe
...06')])
s = pd.Series([1, 2, 3], dates)
print(s.asfreq('D'))
2012-05-01 1.0
2012-05-02 NaN
2012-05-03 NaN
2012-05-04 2.0
2012-05-05 NaN
2012-05-06 3.0
Freq: D, dtype: float64
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Haskell testing workflow
... @EdwardKmett: I saw that the lense package only uses the exitcode-stdio-1.0 test suite interface. The Cabal user guide states, that ``it is preferred that new test suites be written for the detailed-1.0 interface''. Any comments on that?
– copton
Dec 29 '12 ...
How to make rounded percentages add up to 100%
...ython looks like this.
def error_gen(actual, rounded):
divisor = sqrt(1.0 if actual < 1.0 else actual)
return abs(rounded - actual) ** 2 / divisor
def round_to_100(percents):
if not isclose(sum(percents), 100):
raise ValueError
n = len(percents)
rounded = [int(x) for...
How to make an app's background image repeat
...ng black while scrolling.
drawable/app_background.xml:
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="@drawable/actual_pattern_image"
android:tileMode="repeat" />
values/styles.xml:
<?xml ...
Logback to log different messages to two files
... like this in logback. Here's an example configuration:
<?xml version="1.0"?>
<configuration>
<appender name="FILE" class="ch.qos.logback.core.FileAppender">
<file>logfile.log</file>
<append>true</append>
<encoder>
...
What are Makefile.am and Makefile.in?
...md
README.md
Some doc.
configure.ac
AC_INIT([automake_hello_world], [1.0], [bug-automake@gnu.org])
AM_INIT_AUTOMAKE([-Wall -Werror foreign])
AC_PROG_CC
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_FILES([
Makefile
src/Makefile
])
AC_OUTPUT
src/Makefile.am
bin_PROGRAMS = autotools_hello_world
a...
为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...只能运行于安卓设备上，对于iOS设备需要使用swift开发iOS版本的拓展。环境配置安装好 Java开发环境 以及 Ant编译环境，这里以Windows为例，供参考：安装完JDK后配置环境变量 计算机（右键）→属性→高级系统设置→高级→环境变...
Looking for a good world map generation algorithm [closed]
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The "map" specifies the number of continents, continent size variance (eg 1.0 would keep all continents with the same approximate land area, down to 0.1 would allow continents to exist with 1/10th the mass of the largest continent), maximum land area (as a percentage) to generate, and the central l...
Does Java SE 8 have Pairs or Tuples?
...es we are envisioning now. Consider that if Pair had been added in the JDK 1.0 time frame, it probably would have been mutable! (Look at java.util.Date.) Would people have been happy with that? My guess is that if there were a Pair class in Java, it would be kinda-sort-not-really-useful and everybod...