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Accessing bash command line args $@ vs $*
...rs are quoted. Let me illustrate the differences:
$ set -- "arg 1" "arg 2" "arg 3"
$ for word in $*; do echo "$word"; done
arg
1
arg
2
arg
3
$ for word in $@; do echo "$word"; done
arg
1
arg
2
arg
3
$ for word in "$*"; do echo "$word"; done
arg 1 arg 2 arg 3
$ for word in "$@"; do echo "$...
Updating MySQL primary key
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235
Next time, use a single "alter table" statement to update the primary key.
alter table xx dro...
How to merge 2 List and removing duplicate values from it in C#
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295
Have you had a look at Enumerable.Union
This method excludes duplicates from the return set. ...
Implementing slicing in __getitem__
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121
The __getitem__() method will receive a slice object when the object is sliced. Simply look at ...
Math.random() versus Random.nextInt(int)
... bits in its mantissa, so it is uniformly distributed in the range 0 to 1-(2^-53).
Random.nextInt(n) uses Random.next() less than twice on average- it uses it once, and if the value obtained is above the highest multiple of n below MAX_INT it tries again, otherwise is returns the value modulo n...
Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
...is returning an Integer object, which may have its values cached between -128 and 127. This is why the first value returns true - it's cached - and the second value returns false - 128 isn't a cached value, so you're getting two separate Integer instances.
It is important to note that you are comp...
Enable SQL Server Broker taking too long
I have a Microsoft SQL server 2005 and I tried to enable Broker for my database with those T-SQL:
4 Answers
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Export Postgresql table data using pgAdmin
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edited Nov 25 '16 at 15:06
Alfonso Tienda
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