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How to display pandas DataFrame of floats using a format string for columns?
...
summary:
df = pd.DataFrame({'money': [100.456, 200.789], 'share': ['100,000', '200,000']})
print(df)
print(df.to_string(formatters={'money': '${:,.2f}'.format}))
for col_name in ('share',):
df[col_name] = df[col_name].map(lambda p: int(p.replace(',', '...
App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...
...弄错以免烧坏硬件）一般来说，需要接线的端口有以下4个，无论哪款蓝牙硬件，也无论哪种其他硬件，这4个端口都是基本的存在：VCC（正极）、GND（接地负极）、TX、RX 交叉接线，参考接线如图：2、串口工具测试接线完成后，...
CSS Display an Image Resized and Cropped
...uld use a combination of both methods eg.
.crop {
width: 200px;
height: 150px;
overflow: hidden;
}
.crop img {
width: 400px;
height: 300px;
margin: -75px 0 0 -100px;
}
<div class="crop">
<img src="...
Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
...with a string length of random characters
length 5000
length 1000
length 200
Example javascript i used var newstr = str.replace(/[\W_]+/g," ");
Each run consisted of 50 or more sample on each regex, and i run them 5 times on each browser.
Lets race our horses!
Results
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How to get HTTP Response Code using Selenium WebDriver
...aLength":-1,"remotePort":80,"mimeType":"text/html","headersText":"HTTP/1.1 200 OK\r\nDate: Tue, 11 Oct 2016 14:08:47 GMT\r\nServer: Apache/2.2.22 (Ubuntu)\r\nAccept-Ranges: bytes\r\nCache-Control: max-age=300\r\nExpires: Tue, 11 Oct 2016 14:13:47 GMT\r\nVary: Accept-Encoding\r\nContent-Encoding: gzi...
How does Hadoop process records split across block boundaries?
...it 1 containing the path and the hosts to this block. Initialized at start 200-200=0Mb, length 64Mb.
Split 2 initialized at start 200-200+64=64Mb, length 64Mb.
Split 3 initialized at start 200-200+128=128Mb, length 64Mb.
Split 4 initialized at start 200-200+192=192Mb, length 8Mb.
Mapper A will proce...
Python: Continuing to next iteration in outer loop
...
for ii in range(200):
for jj in range(200, 400):
...block0...
if something:
break
else:
...block1...
Break will break the inner loop, and block1 won't be executed (it will run only if the inner l...
Skip List vs. Binary Search Tree
... co-author to all three of these winner-algorithm papers. "Algo.27" is the C++ implementation of Fraser's skip list.
Gramoli's conclusion is that's much easier to screw-up a CAS-based concurrent tree implementation than it is to screw up a similar skip list. And based on the figures, it's hard to d...
What is the difference between gravity and layout_gravity in Android?
...t="gravity=" />
<TextView
android:layout_width="200dp"
android:layout_height="40dp"
android:background="#bcf5b1"
android:gravity="left"
android:text="left" />
<TextView
android:layout_width="200dp"
...
How to implement a binary tree?
...ge anything. My guess is that Fox is simply used to coding a language like C++ or Java, which require the semicolon at the end of the line. Aside from that optional use, semicolons can be used to chain statements in a single line. For example a=1; b=2; c=3 would be a valid single line in python.
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