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How to find gaps in sequential numbering in mysql?
We have a database with a table whose values were imported from another system. There is an auto-increment column, and there are no duplicate values, but there are missing values. For example, running this query:
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How can I get query string values in JavaScript?
...here a plugin-less way of retrieving query string values via jQuery (or without)?
73 Answers
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Change column type from string to float in Pandas
...options for converting types in pandas:
to_numeric() - provides functionality to safely convert non-numeric types (e.g. strings) to a suitable numeric type. (See also to_datetime() and to_timedelta().)
astype() - convert (almost) any type to (almost) any other type (even if it's not necessarily se...
Retrieve CPU usage and memory usage of a single process on Linux?
...usage of a single process on Linux - I know the PID. Hopefully, I can get it every second and write it to a CSV using the 'watch' command. What command can I use to get this info from the Linux command-line?
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Can I load a UIImage from a URL?
I have a URL for an image (got it from UIImagePickerController) but I no longer have the image in memory (the URL was saved from a previous run of the app). Can I reload the UIImage from the URL again?
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Accessing localhost:port from Android emulator
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You can access your host machine with the IP address "10.0.2.2".
This has been designed in this way by the Android team. So your webserver can perfectly run at localhost and from your Android app you can access it via "http://10.0.2.2:<hostport>".
If...
How do I define a method which takes a lambda as a parameter in Java 8?
...hods can be created as Lambda expressions and can be passed by reference (with a little work under the hood). There are plenty of examples online with lambdas being created and used with methods, but no examples of how to make a method taking a lambda as a parameter. What is the syntax for that?
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maven-dependency-plugin (goals “copy-dependencies”, “unpack”) is not supported by m2e
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It seems to be a known issue. You can instruct m2e to ignore this.
Option 1: pom.xml
Add the following inside your <build/> tag:
<pluginManagement>
<plugins>
<!-- Ignore/Execute plugin execution -...
Case-Insensitive List Search
...h of strings. I would like to add a new string into the testList only if it doesn't already exist in the list. Therefore, I need to do a case-insensitive search of the list and make it efficient. I can't use Contains because that doesn't take into account the casing. I also don't want to use To...
Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
...e DBMS!) may operate
contrary to this, so you'll want to
double-check with your target DBMS
before assuming all of this still holds.
I've been a Sybase ASE, MySQL, and SQL Server DBA on-and off since for almost a decade (along with application development in C, PHP, PL/SQL, C#.NET, and Ru...