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ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
...rrays causes the two arrays to be evaluated in boolean context (by
calling __bool__ in Python3 or __nonzero__ in Python2).
Your original code
mask = ((r["dt"] >= startdate) & (r["dt"] <= enddate))
selected = r[mask]
looks correct. However, if you do want and, then instead of a and b u...
Purpose of buildscript block in Gradle
... repositories {
google()
jcenter()
maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
}
// everything listed in the dependencies is actually a plugin, which we'll do "apply plugin" in our module level gradle file.
dependencies {
classpath 'com.an...
How can I run MongoDB as a Windows service?
...vice (since mongodb 1.8)
There's more information on this command here
http://www.mongodb.org/display/DOCS/Windows+Service
#1071 - Specified key was too long; max key length is 1000 bytes
...per column as you define the index. For example:
...
KEY `index` (`parent_menu_id`,`menu_link`(50),`plugin`(50),`alias`(50))
...
But what's the best prefix length for a given column? Here's a method to find out:
SELECT
ROUND(SUM(LENGTH(`menu_link`)<10)*100/COUNT(`menu_link`),2) AS pct_leng...
How to mock ConfigurationManager.AppSettings with moq
...is not a unit test. If you need to check the implementation, see @ zpbappi.com/testing-codes-with-configurationmanager-appsettings
– nkalfov
Jan 31 '18 at 15:23
...
MLKitPoseDetector 拓展：离线人体姿势检测（33 个关键点） · App Inventor 2 中文网
...以过滤掉画面外/被遮挡的点。
关键点带可读名称（LEFT_SHOULDER 这样），不用自己记索引编号。
常用场景：健身动作计数与姿态纠正、体感游戏、舞蹈/瑜伽动作比对、简单手势判断。
.aix 拓展下载：
cn.fun123.MLKit.PoseDetector...
Suppressing “warning CS4014: Because this call is not awaited, execution of the current method conti
...
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How do I use installed packages in PyCharm?
...ere you can import the module.
>> import gnuradio
>> gnuradio.__file__
"path/to/gnuradio"
Most commonly you'll have a folder structure like this:
foobarbaz/
gnuradio/
__init__.py
other_file.py
You want to add foobarbaz to the path here.
...
Save ArrayList to SharedPreferences
...ray to stick around even if the user leaves the activity and then wants to come back at a later time, however I don't need the array available after the application has been closed completely. I save a lot of other objects this way by using the SharedPreferences but I can't figure out how to save ...
Download a file by jQuery.Ajax
...
2019 modern browsers update
This is the approach I'd now recommend with a few caveats:
A relatively modern browser is required
If the file is expected to be very large you should likely do something similar to the original approach (iframe and cookie) because some of the below oper...