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Efficient paging in SQLite with millions of records
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Please note that you always have to use an ORDER BY clause; otherwise, the order is arbitrary.
To do efficient paging, save the first/last displayed values of the ordered field(s), and continue just after them when displaying the next page:
SELECT *
FROM MyTable
WHERE Som...
Is “else if” a single keyword?
...is no else if keyword. We can find a more accessible list of C++ keywords by going to cppreferences section on keywords.
The grammar in section 6.4 also makes this clear:
selection-statement:
if ( condition ) statement
if ( condition ) statement else statement
The if in else if is a statement...
Sort a Map by values
...tatic <K, V extends Comparable<? super V>> Map<K, V> sortByValue(Map<K, V> map) {
List<Entry<K, V>> list = new ArrayList<>(map.entrySet());
list.sort(Entry.comparingByValue());
Map<K, V> result = new LinkedHashMap<>();
...
Where can I find the IIS logs?
...lieve the latter path (...\HTTPERR) is the place where log files generated by http.sys land by default, not log files from IIS itself. See: technet.microsoft.com/en-us/library/cc784703%28v=ws.10%29.aspx
– Jon Schneider
Jan 5 '16 at 22:07
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Can a for loop increment/decrement by more than one?
...op in Javascript besides i++ and ++i ? For example, I want to increment by 3 instead of one.
7 Answers
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What is “stdafx.h” used for in Visual Studio?
... is a death knell.
This is not unique to Windows but an old problem faced by all compilers that have to compile against a large API like Windows.
The Microsoft compiler can ameliorate this problem with a simple trick called precompiled headers. The trick is pretty slick: although every CPP file ca...
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...ication. One thing I noticed is that GCC will optimize the call pow(a,2) by compiling it into a*a , but the call pow(a,6) is not optimized and will actually call the library function pow , which greatly slows down the performance. (In contrast, Intel C++ Compiler , executable icc , will elim...
Add vertical whitespace using Twitter Bootstrap?
...ose classes
are applied from min-width: 0 and up, and thus are not bound by a
media query. The remaining breakpoints, however, do include a
breakpoint abbreviation.
The classes are named using the format {property}{sides}-{size} for xs
and {property}{sides}-{breakpoint}-{size} for sm, m...
What is the difference between Cloud, Grid and Cluster? [closed]
...rs from Cloud and Grid in that a cluster is a group of computers connected by a local area network (LAN), whereas cloud and grid are more wide scale and can be geographically distributed. Another way to put it is to say that a cluster is tightly coupled, whereas a Grid or a cloud is loosely coupled....
How to check if running as root in a bash script
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@StephenAngelico Sudo should work. If you're testing it by doing $ sudo echo $EUID ; that's a bad test and will fail because $EUID is expanded before the command is passed to sudo. Try putting echo $EUID in a test script and running that with sudo.
– user116...