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What's the best way to get the last element of an array without deleting it?
...Undefined offset: -1 in Command line code on line 1
N4 = Notice: Undefined index: in Command line code on line 1
Based on this output I draw the following conclusions:
newer versions of PHP perform better with the exception of these options that became significantly slower:
option .6. $x = en...
What's the difference between TRUNCATE and DELETE in SQL
...a large amount of undo. Truncate generates a negligible amount of each.
Indexes
Oracle
A truncate operation renders unusable indexes usable again. Delete does not.
Foreign Keys
A truncate cannot be applied when an enabled foreign key references the table. Treatment with delete depends on th...
Send string to stdin
...eky:
0000000: 0000 0000 bef9 0e3c 59f8 8e3c 0a71 d63c .......<Y..<.q.<
0000010: c6f2 0e3d 3eaa 323d 3a5e 563d 090e 7a3d ...=>.2=:^V=..z=
0000020: 7bdc 8e3d 2aaf a03d b67e b23d c74a c43d {..=*..=.~.=.J.=
0000030: 0513 d63d 16d7 e73d a296 f93d a8a8 053e ...=...=...=...>
0000040: 65...
Spring @PostConstruct vs. init-method attribute
...
@Donal Quite true . Was just providing info on how this works.
– Aravind A
Dec 15 '11 at 11:32
1
...
JavaScript variables declare outside or inside loop?
...rs in the body of the loop should be declared before the loop begins. The index value of the loop is clearly a special case (and is hoisted) and doesn't not help the OP at all.
– mkoistinen
Sep 10 '10 at 14:13
...
git replace local version with remote version
...s of one file (or a selection) from upstream. You don't want to affect the index directly (so you would go through add + commit as usual).
Simply do
git checkout remote/branch -- a/file b/another/file
If you want to do this for extensive subtrees and instead wish to affect the index directly use...
What is meant by “managed” vs “unmanaged” resources in .NET?
...it's recommended you write your code thusly:
using (var connection = new SqlConnection("connection_string_here"))
{
// Code to use connection here
}
As this ensures that .Dispose() is called on the connection object, ensuring that any unmanaged resources are cleaned up.
...
Random row from Linq to Sql
...tive
select row;
int count = qry.Count(); // 1st round-trip
int index = new Random().Next(count);
Customer cust = qry.Skip(index).FirstOrDefault(); // 2nd round-trip
share
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improve thi...
Parse (split) a string in C++ using string delimiter (standard C++)
...m one string: <code>size_t last = 0; size_t next = 0; int index = 0; while (index<4) { next = str.find(delimiter, last); auto number = str.substr(last, next - last); IPv4[index++] = atoi(number.c_str()); last = next + 1; }</code>
...
Why use static_cast(x) instead of (int)x?
...ometimes you do know that a pointer points to a given subtype, by means opaque to the compiler, and a static_cast is faster. In at least some environments, dynamic_cast requires optional compiler support and runtime cost (enabling RTTI), and you might not want to enable it just for a couple of check...