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How can I get device ID for Admob
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If you are running admob ads on an emulator then there is no ID. just use the AdManager method and set it to TEST_EMULATOR like the logcat says. If you run on an actual device with usb debugging and watch the logcat, the ID...
Android List Preferences: have summary as selected value?
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@BaptisteCandellier thanks for the heads-up. If something exists, the Android team will deprecate it. I've added a link to androidx.
– George Hilliard
Jul 1 '19 at 22:02
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Python != operation vs “is not”
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@viksit. None has few methods and almost no attributes. If your __eq__ test expected a method or attribute, it might break. def __eq__( self, other ): return self.size == other.size. For example, will break if other happens to be None.
– S.Lott
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How to set username and password for SmtpClient object in .NET?
I see different versions of the constructor, one uses info from web.config, one specifies the host, and one the host and port. But how do I set the username and password to something different from the web.config? We have the issue where our internal smtp is blocked by some high security clients and...
Bash Templating: How to build configuration files from templates with Bash?
.../$LHS/$RHS}
done
echo "$line"
done
. Solution that does not hang if RHS references some variable that references itself:
#!/bin/bash
line="$(cat; echo -n a)"
end_offset=${#line}
while [[ "${line:0:$end_offset}" =~ (.*)(\$\{([a-zA-Z_][a-zA-Z_0-9]*)\})(.*) ]] ; do
PRE="${BASH_REMATCH[1]...
Rails: Why does find(id) raise an exception in rails? [duplicate]
If there is no user with an id of 1 in the database, trying User.find(1) will raise an exception.
2 Answers
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count the frequency that a value occurs in a dataframe column
...38]:
df['a'].value_counts()
Out[38]:
b 3
a 2
s 2
dtype: int64
If you wanted to add frequency back to the original dataframe use transform to return an aligned index:
In [41]:
df['freq'] = df.groupby('a')['a'].transform('count')
df
Out[41]:
a freq
0 a 2
1 b 3
2 s 2
3 s...
Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
...a map will be constructed, and once it is initialized, it will never be modified again. It will however, be accessed (via get(key) only) from multiple threads. Is it safe to use a java.util.HashMap in this way?
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Regex to get string between curly braces
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If your string will always be of that format, a regex is overkill:
>>> var g='{getThis}';
>>> g.substring(1,g.length-1)
"getThis"
substring(1 means to start one character in (just past the first {) and ,g...
Recommended way to stop a Gradle build
...ered something invalid, or GradleScriptException for more general errors.
If you want to stop the current task or action, and move on to the next, you can also throw a StopActionException
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