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Integer.toString(int i) vs String.valueOf(int i)
... of doing the same thing. It may be a historical reason (can't remember if one came before the other).
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What is the difference between Cloud, Grid and Cluster? [closed]
... essentially smashing up many machines to make a really big & powerful one. This is a much more difficult architecture than cloud or grid to get right because you have to orchestrate all nodes to work together, and provide consistency of things such as cache, memory, and not to mention clocks. O...
How can you represent inheritance in a database?
...table as in your first option is probably the simplest design. As you mentioned, many attributes that are subtype-specific will have to be given a NULL value on rows where these attributes do not apply. With this model, you would have one policies table, which would look something like this:
+------...
PostgreSQL - fetch the row which has the Max value for a column
... vary in production based on actual machine load/data access spread. When one query appears slightly faster (<20%) than the other but has a much higher cost, it will generally be wiser to choose the one with higher execution time but lower cost.
When you expect that there will be no competition...
Want to find records with no associated records in Rails
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This is still pretty close to SQL, but it should get everyone with no friends in the first case:
Person.where('id NOT IN (SELECT DISTINCT(person_id) FROM friends)')
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improv...
How do I lowercase a string in C?
...(int i = 0; str[i]; i++){
str[i] = tolower(str[i]);
}
or if you prefer one liners, then you can use this one by J.F. Sebastian:
for ( ; *p; ++p) *p = tolower(*p);
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PHP case-insensitive in_array function
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you can use preg_grep():
$a= array(
'one',
'two',
'three',
'four'
);
print_r( preg_grep( "/ONe/i" , $a ) );
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Qt events and signal/slots
...ferred queue is the same as the queue event loop, or it exists two queues? one for deffered signals and on for event ?
– Guillaume07
Dec 10 '11 at 23:25
29
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What exactly is an Assembly in C# or .NET?
...name, culture, referenced assemblies and so forth.
In 99% of your cases, one assembly equals a physical file on disk - the case of a multi-file assembly (one assembly, distributed across more than a single file) appears to be a rather odd-ball edge case which I've never encountered so far in my 5+...
Can CSS force a line break after each word in an element?
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Use
.one-word-per-line {
word-spacing: <parent-width>;
}
.your-classname{
width: min-intrinsic;
width: -webkit-min-content;
width: -moz-min-content;
width: min-content;
display: table-caption;
d...