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LIMIT 10..20 in SQL Server
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For SQL Server 2012 + you can use.
SELECT *
FROM sys.databases
ORDER BY name
OFFSET 5 ROWS
FETCH NEXT 5 ROWS ONLY
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How to correctly implement custom iterators and const_iterators?
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They often forget that iterator must convert to const_iterator but not the other way around. Here is a way to do that:
template<class T, class Tag = void>
class IntrusiveSlistIterator
: public std::iterator<std::forward_iterator_tag, T>
{
typ...
How can I convert a string to a number in Perl?
I have a string which holds a decimal value in it and I need to convert that string into a floating point variable. So an example of the string I have is "5.45" and I want a floating point equivalent so I can add .1 to it. I have searched around the internet, but I only see how to convert a string t...
Threads vs Processes in Linux
...sses and threads -- everything is simply a runnable task. *
On Linux, the system call clone clones a task, with a configurable level of sharing, among which are:
CLONE_FILES: share the same file descriptor table (instead of creating a copy)
CLONE_PARENT: don't set up a parent-child relationship b...
Pandas DataFrame column to list [duplicate]
...ta in pandas dataframe has both int64 and float64. When I do df.values, it converts the int64 to float64 and the whole array has dtype of float64. Any clues how to deal with this ?
– ShikharDua
Apr 21 '16 at 21:00
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Get the IP address of the machine
...nd should be the same below.
I've done a quick example below which will print all of the machine's IPv4 address, (you should also check the getifaddrs was successful ie returns 0).
I've updated it show IPv6 addresses too.
#include <stdio.h>
#include <sys/types.h>
#include <if...
What is the difference between related SQLite data-types like INT, INTEGER, SMALLINT and TINYINT?
...RDBMSes. Everything, internally, is stored as text. Data types are coerced/converted into various storage locations based on affinities (ala data types assigned to columns).
The best thing that I'd recommend you do is to :
Temporarily forget everything you used to know about standalone database d...
What is the equivalent of bigint in C#?
...r how much they look alike. Part of the reason is that SQL will frequently convert Int/BigInt to Numeric as part of the normal processing. So when it goes to OLE or .NET the required conversion is NUMERIC to INT.
We don't often notice since the printed value looks the same.
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How can I read large text files in Python, line by line, without loading it into memory?
...approximately) that size (in bytes). A negative buffering means to use the system default, which is usually line buffered for tty devices and fully buffered for other files. If omitted, the system default is used
– jyoti das
Apr 19 '18 at 5:26
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How do I prevent an Android device from going to sleep programmatically?
...e a wake lock. Example from the docs:
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
wl.acquire();
// screen and CPU will stay awake during this section
wl.release();
There's also ...