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What are the main performance differences between varchar and nvarchar SQL Server data types?
...y Collation such as Latin1_General_100_BIN2.
If storing postal codes (i.e. zip codes), use VARCHAR since it is an international standard to never use any letter outside of A-Z. And yes, still use VARCHAR even if only storing US zip codes and not INT since zip codes are not numbers, they are strings,...
Generate a heatmap in MatPlotLib using a scatter data set
...dn(1000)
y = np.random.randn(1000)
sigmas = [0, 16, 32, 64]
for ax, s in zip(axs.flatten(), sigmas):
if s == 0:
ax.plot(x, y, 'k.', markersize=5)
ax.set_title("Scatter plot")
else:
img, extent = myplot(x, y, s)
ax.imshow(img, extent=extent, origin='lower', c...
Splitting a list into N parts of approximately equal length
...
sending this output into 'zip' gives you your ordered list: zip(*chunkify(range(13), 3)) results in [(0, 1, 2), (3, 4, 5), (6, 7, 8), (9, 10, 11)]
– gens
Apr 13 '17 at 18:40
...
How do I install an R package from source?
...the extension. I had an error "(as ‘lib’ is unspecified)" from R with .zip archives. It all works fine after changing the extension to .tar.
– Mohamed Hasan
Mar 7 '17 at 10:05
...
程序员：编程能力与编程年龄的关系 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...后才会开始下降。所以说，程序员吃的不是青春饭。只有码农，靠蛮力，用体力而不是用脑力的程序员才是吃春天饭的人。
年纪大的人是否跟不上新技术
论文的作者分析了Tag，用了最近5年内比较流行的技术Tag，然后用了一套...
Python Dictionary Comprehension
...also do the following.
keys = ['a', 'b', 'c']
values = [1, 2, 3]
d = dict(zip(keys, values))
giving
d = {'a': 1, 'b': 2, 'c': 3}
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Limit File Search Scope in Sublime Text 2
..."*.ttf", "*.tga", "*.dds", "*.ico", "*.eot", "*.pdf", "*.swf", "*.jar", "*.zip"],
"folder_exclude_patterns": [".svn", ".git", ".hg", "CVS"],
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
...aix - v1.3
中文网测试案例
.aia 测试源码下载：
TestSqlite.aia
打开数据库
一般可以在屏幕初始化时打开db。如果数据库已打开，则不会发生任何事情（即可以多次调用打开操作）。
...
Good introduction to the .NET Reactive Framework [closed]
..."DevCamp 2010 keynote" video is here: bartdesmet.net/download/Rx40Samples.zip
– Omer Raviv
Jan 20 '11 at 9:15
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How to sign an android apk file
... and signed your package, it will also
perform package alignment with
zip align. Because the Export Wizard
uses both Keytool and Jarsigner, you
should ensure that they are accessible
on your computer, as described above
in the Basic Setup for Signing.
To create a signed and aligned...