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Intel HAXM 安装失败？Hyper-V or Intel HAXM 你得二选一 - App Inventor 2...
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简单查了一下，Hyper-V 和 HAXM 都是虚拟化技术。前者是微软提供的，Windows 10 自带。后者是英特尔提供的，专门用于加速安卓模拟器。看上去这两者不兼容。如果不禁用 Hyper-V，直接重装 HAXM 的话，在安装过程中...
In Java, what is the best way to determine the size of an object?
...8 4 (loss due to the next object alignment)
Instance size: 72 bytes (reported by Instrumentation API)
Space losses: 2 bytes internal + 4 bytes external = 6 bytes total
You can get a summary view of the deep size of an object instance using GraphLayout.parseInstance(obj).toFootprint...
Inline labels in Matplotlib
...inspace(0,1,500)
A = [1,2,5,10,20]
funcs = [np.arctan,np.sin,loglaplace(4).pdf,chi2(5).pdf]
plt.subplot(221)
for a in A:
plt.plot(X,np.arctan(a*X),label=str(a))
labelLines(plt.gca().get_lines(),zorder=2.5)
plt.subplot(222)
for a in A:
plt.plot(X,np.sin(a*X),label=str(a))
labelLines(plt.g...
“Wrap with try…catch” in IntelliJ?
...ply
If you want to know default key strokes in Intellij Idea, check this pdf provided by Jetbrains
[Updated Link]
https://resources.jetbrains.com/storage/products/intellij-idea/docs/IntelliJIDEA_ReferenceCard.pdf
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Interface/enum listing standard mime-type constants
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I used this until I needed application/pdf mime type. Unfortunately, this class does not have a constant for pdf :(
– Dmitriy Popov
Mar 26 at 11:53
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How Do I Use Factory Girl To Generate A Paperclip Attachment?
...tory:
factory :attachment do
supporting_documentation_file_name { 'test.pdf' }
supporting_documentation_content_type { 'application/pdf' }
supporting_documentation_file_size { 1024 }
# ...
end
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解决：Successful WSAStartup not yet performed. Error code : 10093. - c...
出现10093错误的原因是应用程序没有调用 WSAStartup，或者 WSAStartup 失败。
原因：调用WSASocket等Socket函数之前必须先执行WSAStartup()初始化。
解决方法：
BOOL CxxxApp::InitInstance()
{
WSADATA wsaData;
&...
User recognition without cookies or local storage
...hese)
Web Bugs (less reliable because bugs get fixed, but still useful)
PDF Bug
Flash Bug
Java Bug
Browsers
Click Tracking (many users visit the same series of pages on each visit)
Browsers Finger Print
- Installed Plugins (people often have varied, somewhat unique sets of plugins)
Cached ...
Visual List of iOS Fonts?
...Sangam MN", "Oriya Sangam MN", "Snell Roundhand", "Zapf Dingbats", "Bodoni 72", "Verdana", "American Typewriter", "Avenir Next", "Baskerville", "Khmer Sangam MN", "Didot", "Savoye LET", "Bodoni Ornaments", "Symbol", "Menlo", "Bodoni 72 Smallcaps", "Papyrus", "Hiragino Sans", "PingFang SC", "Euphemia...
Create two blank lines in Markdown
...on-white-space. The benefit is that in Markdown flavours that include both PDF and HTML output options (including Rmarkdown), it should be understood in the same way for both output types, whereas I'm not sure how PDF output would interpret <br> or &nbsp;
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