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Set transparent background of an imageview on Android
...ncy, you should pre-pend two more characters to the hexadecimal code, like CC.
Note
android:background="#CCFF0088" in XML
where CC is the alpha value, FF is the red factor, 00 is the green factor, and 88 is the blue factor.
Some opacity code:
Hex Opacity Values
100% — FF
95% — F2
90% — E6
85% ...
HTML5 Canvas 100% Width Height of Viewport?
...of how to have a canvas dynamically adapt in size upon window resize. The accepted answer appropriately handles the case where width and height are both supposed to be 100%, which is what was asked for, but which also will change the aspect ratio of the canvas. Many users will want the canvas to res...
How to check whether a pandas DataFrame is empty?
...ength of a dataframe's columns index:
if len(df.columns) == 0: 1
Reason:
According to the Pandas Reference API, there is a distinction between:
an empty dataframe with 0 rows and 0 columns
an empty dataframe with rows containing NaN hence at least 1 column
Arguably, they are not the same. The oth...
The $.param( ) inverse function in JavaScript / jQuery
... answered Jun 9 '11 at 19:23
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Comparison of CI Servers? [closed]
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confluence.public.thoughtworks.org/display/CC/CI+Feature+Matrix not found
– Kiquenet
Jun 23 '14 at 9:58
11
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case-insensitive list sorting, without lowercasing the result?
... then have to use unicode.lower for unicode objects, whereas string.lower accepts both (which, as you put it, is probably not really a "sane" mode of operation, though).
– Daniel Andersson
Jun 5 '16 at 10:29
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How to make a background 20% transparent on Android
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Make the color have 80% in the alpha channel. For example, for red use #CCFF0000:
<TextView
...
android:background="#CCFF0000" />
In the example, CC is the hexadecimal number for 255 * 0.8 = 204. Note that the first two hexadecimal digits are for the alpha channel. The format is #A...
Python: json.loads returns items prefixing with 'u'
...on't be thrown by the printed output.
For example, try this:
print mail_accounts[0]["i"]
You won't see a u.
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Installing Google Protocol Buffers on mac
.... However homebrew has removed protobuf241 from its formula. I install it according @kksensei's answer manually and have to fix some error during the process.
During the make process, I get 3 error like following:
google/protobuf/message.cc:130:60: error: implicit instantiation of undefined t...
How to send an email with Python?
...alysis has done!')
below may only for Chinese user:
If you use 126/163, 网易邮箱, you need to set"客户端授权密码", like below:
ref: https://stackoverflow.com/a/41470149/2803344
https://docs.python.org/3/library/email.examples.html#email-examples
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