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Swift: Pass array by reference?
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@Boon Array is still semantically copied/passed-by-value, but just optimised to use COW.
– eonil
Oct 14 '14 at 3:38
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How can I calculate the difference between two dates?
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Not all days have 86400 seconds. For a trivial example that's fine but it's not a good idea in the real world. DST changes, leap seconds, etc can all mess with it. NSCalendar can tell you how many seconds are in a given day.
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Generating a unique machine id
...yourself and hash it to an arbitrary length. See the PDF specification for all SMBIOS structures available.
To query the SMBIOS info from Windows you could use EnumSystemFirmwareEntries, EnumSystemFirmwareTables and GetSystemFirmwareTable.
IIRC, the "unique id" from the CPUID instruction is deprec...
How to convert a string of numbers to an array of numbers?
...tion yourself like:
Array.prototype.map = Array.prototype.map || function(_x) {
for(var o=[], i=0; i<this.length; i++) {
o[i] = _x(this[i]);
}
return o;
};
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improve...
Bulk package updates using Conda
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You want conda update --all.
conda search --outdated will show outdated packages, and conda update --all will update them (note that the latter will not update you from Python 2 to Python 3, but the former will show Python as being outdated if you ...
Wait until a process ends
...Responding that went to false after closing the window like that:
while (!_process.HasExited && _process.Responding) {
Thread.Sleep(100);
}
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Perhaps this helps someone.
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impro...
What is JSONP, and why was it created?
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It's actually not too complicated...
Say you're on domain example.com, and you want to make a request to domain example.net. To do so, you need to cross domain boundaries, a no-no in most of browserland.
The one item that bypasses ...
SQL Server SELECT INTO @variable?
... In case if you aren't using the database type that the OP is using, not all support TOP 1 as Adrian mentioned. SQL Server / MS Access use TOP, MySQL uses LIMIT, and Oracle uses ROWNUM. See w3schools.com/sql/sql_top.asp for more information.
– Tyler
Jul 7 '17...
Suggestions for debugging print stylesheets?
...; Rendering Settings > Emulate media > print
– allicarn
Jul 7 '16 at 22:22
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Run MySQLDump without Locking Tables
...bles you can use the --single-transaction option:
--lock-tables, -l
Lock all tables before dumping them. The tables are locked with READ
LOCAL to allow concurrent inserts in the case of MyISAM tables. For
transactional tables such as InnoDB and BDB, --single-transaction is
a much better option, be...