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Does Java casting introduce overhead? Why?
...t objects of one type to another? Or the compiler just resolves everything and there is no cost at run time?
5 Answers
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Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)
...utomated weather data from the web. The observations occur every 5 minutes and are compiled into monthly files for each weather station. Once I'm done parsing a file, the DataFrame looks something like this:
...
Closing Hg Branches
When using hg branch FeatureBranchName and publishing it to a central repo that is shared amongst developers, is there a way to eventually close the FeatureBranchName when its development has officially been merged with the default branch?
...
Count lines of code in all java classes in Android Studio
...
Go to
https://plugins.jetbrains.com/idea/plugin/4509-statistic
and install the latest version
To install
Run Android Studio
From the menu bar, select File-->Settings
Under IDE Settings, click Plugins, and then click Install plugin from disk
Navigate to the folder where you download...
How do I stop a Git commit when VI is on the screen waiting for a commit message?
... have two options:
Provide an empty commit message. If it's a new commit and you haven't yet saved the message, you can simply use :q! (quit without saving). If you’ve already saved (or you're amending a previous commit), just delete the entire log message and save again. This can be done with g...
error: ‘NULL’ was not declared in this scope
...
NULL is not a keyword. It's an identifier defined in some standard headers. You can include
#include <cstddef>
To have it in scope, including some other basics, like std::size_t.
share
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What is the difference between MySQL Server and MySQL Client
...tu I normally install both but what are the differences between the client and server for MySQL.
3 Answers
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Best way to check if a Data Table has a null value in it
...
Try comparing the value of the column to the DBNull.Value value to filter and manage null values in whatever way you see fit.
foreach(DataRow row in table.Rows)
{
object value = row["ColumnName"];
if (value == DBNull.Value)
// do something
else
// do something else
}
...
How to stop IntelliJ truncating output when I run a build?
... answer for older versions:
Edit your IDEA_HOME\bin\idea.properties file, and increase this setting:
#-----------------------------------------------------------------------
# This option controls console cyclic buffer: keeps the console output size not higher than the specified buffer size (Kb). ...
How to deal with IntelliJ IDEA project files under Git source control constantly changing?
Everyone on our team uses IntelliJ IDEA, and we find it useful to put its project files (.ipr and .iml) into source control so that we can share build configurations, settings, and inspections. Plus, we can then use those inspection settings on our continuous integration server with TeamCity. (We ha...