大约有 42,000 项符合查询结果（耗时：0.0631秒） [XML]
Converting bytes to megabytes
... it is not correct actually because mega means 1 000 000. There is a new standard name for 220 bytes, it is mebibyte (http://en.wikipedia.org/wiki/Mebibyte) and it gathers popularity.
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Using printf with a non-null terminated string
Suppose you have a string which is NOT null terminated and you know its exact size, so how can you print that string with printf in C? I recall such a method but I can not find out now...
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Reading Xml with XmlReader in C#
I'm trying to read the following Xml document as fast as I can and let additional classes manage the reading of each sub block.
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How do you check “if not null” with Eloquent?
...null at deleted field, so I changed this into whereNull('deleted_at') and I got my query running.
– Tarunn
Jun 19 '15 at 12:45
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java.net.ConnectException: Connection refused
...t, internet connectivity - being on the same router is must for local IP's and more)
– Vinay Bhargav
Aug 11 '15 at 4:10
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conditional unique constraint
...onstraint like this. The difference is, you'll return false if Status = 1 and Count > 0.
http://msdn.microsoft.com/en-us/library/ms188258.aspx
CREATE TABLE CheckConstraint
(
Id TINYINT,
Name VARCHAR(50),
RecordStatus TINYINT
)
GO
CREATE FUNCTION CheckActiveCount(
@Id INT
) RETURNS INT...
What is the bit size of long on 64-bit Windows?
...o long ago, someone told me that long are not 64 bits on 64 bit machines and I should always use int . This did not make sense to me. I have seen docs (such as the one on Apple's official site) say that long are indeed 64 bits when compiling for a 64-bit CPU. I looked up what it was on 64-bit W...
How do I revert all local changes in Git managed project to previous state?
...everal commits, I did git status which told me everything was up to date and there were no local changes.
14 Answers
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Include all existing fields and add new fields to document
...ne a $project aggregation stage where I can instruct it to add a new field and include all existing fields, without having to list all the existing fields.
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Concatenate text files with Windows command line, dropping leading lines
I need to concatenate some relatively large text files, and would prefer to do this via the command line. Unfortunately I only have Windows, and cannot install new software.
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