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Difference between DateTime and Time in Ruby
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179
Newer versions of Ruby (2.0+) do not really have significant differences between the two class...
wkhtmltopdf: cannot connect to X server
...cuments on-the-fly on my linux web server. The program originally needed X11 or similar X server to run correctly, but through many requests by developers to have this run on servers without GUI, I am pretty sure it runs a virtual X server in the static version . I have been using the static (sta...
What is the best Battleship AI?
... games per match. Doing 50 games is just flipping a coin. I needed to do 1000 games to get any reasonable distinction between test algorithms.
Download Dreadnought 1.2.
Strategies:
keep track of all possible positions for ships that have >0 hits. The list never gets bigger than ~30K so it ...
How to get the first column of a pandas DataFrame as a Series?
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143
>>> import pandas as pd
>>> df = pd.DataFrame({'x' : [1, 2, 3, 4], 'y' : [4,...
Convert Elixir string to integer or float
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154
Check Integer.parse/1 and Float.parse/1.
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How to check if a value exists in a dictionary (python)
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>>> d = {'1': 'one', '3': 'three', '2': 'two', '5': 'five', '4': 'four'}
>>> 'one' in d.values()
True
Out of curiosity, some comparative timing:
>>> T(lambda : 'one' in d.itervalues()).repeat()
[0.28107285499572754...
How to calculate “time ago” in Java?
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179
Take a look at the PrettyTime library.
It's quite simple to use:
import org.ocpsoft.prettyti...
VC MFC工具栏(CToolBar)控件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...按钮控件显示的区域（大小）相对于父窗口
ButtonRect.left=10;
ButtonRect.top=10;
ButtonRect.right=80;
ButtonRect.bottom=30;
m_Button.Create("动态创建",WS_CHILD,ButtonRect,this,1115);
m_Button.ShowWindow(SW_SHOW);//显示按钮控件
知道了怎样动态创建按钮控件...
How do I use a Boolean in Python?
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142
checker = None
if some_decision:
checker = True
if checker:
# some stuff
[Edit]
...