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What will happen if I modify a Python script while it's running?
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Nothing happens. I also checked it in a small test. What happens: the pyc is only the compilate. And this compilate gets loaded into the RAM and then executed. So it's always possible to change the program, recompile and run another instance e.g. in a different console.
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Laravel Schema onDelete set null
...ght want to roll back, write out the sql by hand and then execture and run tests on local. Everything I can find says that should work dev.mysql.com/doc/refman/5.6/en/…, could be an issue generating the sql
– Chris Barrett
Jan 1 '14 at 13:55
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OAuth secrets in mobile apps
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This is very interesting, although it confirms what I feared, that OAuth is not so great for desktop/mobile apps. Of course, an attacker would have to first get the secret and then also sniff someone's credentials, so it would take quite some determination. The p...
Eclipse shortcut “go to line + column”
...jump to the next dot in the same line.
for example, in System.out.println("test"); you can switch between System, out and println by using CTRL + forward and backward key.
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How to check whether a pandas DataFrame is empty?
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To see if a dataframe is empty, I argue that one should test for the length of a dataframe's columns index:
if len(df.columns) == 0: 1
Reason:
According to the Pandas Reference API, there is a distinction between:
an empty dataframe with 0 rows and 0 columns
an empty dataframe w...
Using C# reflection to call a constructor
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Console.WriteLine("Constructor called, a={0}", a);
}
}
class Test
{
static void Main()
{
Type type = typeof(Addition);
ConstructorInfo ctor = type.GetConstructor(new[] { typeof(int) });
object instance = ctor.Invoke(new object[] { 10 });
}
}
EDIT: ...
Using PropertyInfo to find out the property type
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OK, written some unit tests and it works a treat. It does indeed treat string and String the same. I expected that, but just wanted to make sure.
– peter
Sep 16 '10 at 20:45
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Why does the JVM still not support tail-call optimization?
...T. Depending on the JVM, the JIT may or may not do this.
Then it gives a test you can use to figure out if your JIT does this.
Naturally, since this is an IBM paper, it includes a plug:
I ran this program with a couple of
the Java SDKs, and the results were
surprising. Running on Sun's Ho...
Does Ruby regular expression have a not match operator like “!~” in Perl?
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Back in perl, 'foobar' !~ /bar/ was perfectly perlish to test that the string doesn't contain "bar".
In Ruby, particularly with a modern style guide, I think a more explicit solution is more conventional and easy to understand:
input = 'foobar'
do_something unless input.match?(/ba...
How do I stop Notepad++ from showing autocomplete for all words in the file
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The answer is to DISABLE "Enable auto-completion on each input". Tested and works perfectly.
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