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findViewByID returns null
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In my case, I had 2 activites in my project, main.xml and main2.xml. From the beginning, main2 was a copy of main, and everything worked well, until I added new TextView to main2, so the R.id.textview1 became available for the rest of app. Then I tried to fetch it by standar...
How to list all users in a Linux group?
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Use Python to list groupmembers:
python -c "import grp; print grp.getgrnam('GROUP_NAME')[3]"
See https://docs.python.org/2/library/grp.html
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How do I check if there are duplicates in a flat list?
...en check its length. Its advantage is that it's letting the C code inside Python do the heavy lifting. Your solution loops in Python code, but has the advantage of short-circuiting when a single match has been found. If the odds are that the list probably has no duplicates, I like Denis Otkidach'...
How can you program if you're blind?
...or about 13 years on Windows, Mac, Linux and DOS, in languages from C/C++, Python, Java, C# and various smaller languages along the way. Though the original question was around configuring the environment, I think it's best answered by looking at how a blind person would use a computer.
Some people...
Shuffle two list at once with same order
...er because I need compare them in the end (it depends on order). I'm using python 2.7
6 Answers
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How do you version your database schema? [closed]
...ltas. I make changes to a master database and have a tool that creates an XML based build script based on the master database.
When it comes time to upgrade an existing database I have a program that uses the XML based build script to create a new database and the bare tables. I then copy the dat...
How do I read CSV data into a record array in NumPy?
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@hhh try adding encoding="utf8" argument. Python is one of the few modern software pieces that frequently causes text encoding problems, which feel as things from the past.
– kolen
Sep 24 '18 at 22:34
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Building vs. Compiling (Java)
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Actually you are doing the same thing. Ant is build system based on XML configuration files that can do a wide range of tasks related to compiling software. Compiling your java code is just one of those tasks. There are many others such as copying files around, configuring servers, assembling...
Why JavaScript rather than a standard browser virtual machine?
Would it not make sense to support a set of languages (Java, Python, Ruby, etc.) by way of a standardized virtual machine hosted in the browser rather than requiring the use of a specialized language -- really, a specialized paradigm -- for client scripting only?
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Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign
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If you have changed the length of a varchar field in the database and the XML contained in the XSS file has not picked it up, find the field name and attribute definition in the XML and change it manually.
Remove primary keys from select lists in table adapters if they are not related to the data ...