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Copy array by value
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Regarding performance the following jsPerf tests actually show that var arr2 = arr1.slice() is just as fast as var arr2 = arr1.concat(); JSPerf: jsperf.com/copy-array-slice-vs-concat/5 and jsperf.com/copy-simple-array . The result of jsperf.com/array-copy/5 kind of s...
When is the finalize() method called in Java?
...d to know when the finalize() method is called in the JVM . I created a test class which writes into a file when the finalize() method is called by overriding it. It is not executed. Can anybody tell me the reason why it is not executing?
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How to remove leading and trailing whitespace in a MySQL field?
...k while doing select query
This works
select replace(name , ' ','') from test;
While this doesn't
select trim(name) from test;
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Check if item is in an array / list
...or arrays.
for example say you have dataframe which has a column name ie, test['Name'], you can do
if name in test['Name'].values :
print(name)
for a normal list you dont have to use .values
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SET NOCOUNT ON usage
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The problem with this rule is just that it's harder to test for than "Is SET NOCOUNT ON at the top of the proc?"; I wonder whether SQL Analysis tools like Sql Enlight can test for that sort of thing... Adding it to my long-term todo list for my SQL formatter project :)
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Why are only final variables accessible in anonymous class?
...al not just as a parameter, but as a class-level field, like
public class Test
{
public final int a = 3;
or as a local variable, like
public static void main(String[] args)
{
final int a = 3;
If you want to access and modify a variable from an anonymous class, you might want to make the vari...
PHP global in functions
...a tangled mess.
Reuse is severly hampered by all of the above. So is unit-testing.
Also, your function signatures are lying when you couple to the global scope
function fn()
is a liar, because it claims I can call that function without passing anything to it. It is only when I look at the funct...
How do you clear the SQL Server transaction log?
... of the fact every time I need to do something beyond the basics. I have a test database that is not large in size, but the transaction log definitely is. How do I clear out the transaction log?
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Scaling Node.js
... connect-auth library. Then you are covered safe because they have experts testing there login-systems for holes and the also don't transmit passwords via plain-text but thank for god use https. I also have answered a topic for a user who wanted to use facebook-connect.
validation of input data
To...
Absolute positioning ignoring padding of parent
... I am using box-sizing: border-box; for the elements involved.
I have not tested this in all browsers, but it seems to be working in Chrome, Firefox and IE10.
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