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Should I commit or rollback a read transaction?
...tion, you should close it. Committing releases any locks you may have had, and is equally sensible with ReadUncommitted or Serializable isolation levels. Relying on implicit rollback - while perhaps technically equivalent - is just poor form.
If that hasn't convinced you, just imagine the next guy ...
Java 8 stream's .min() and .max(): why does this compile?
...not used for matching purposes.
Therefore, both Integer.min(int a, int b) and Integer.max(int a, int b) are close enough that autoboxing will allow this to appear as a Comparator<Integer> in a method context.
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Difference between float and double in php?
...hat version of PHP? Prior to PHP 7.0, scalar type hints were not available and would be interpreted as class names instead. That looks like what is going on there.
– Ken Wayne VanderLinde
Nov 1 '17 at 18:50
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Effect of NOLOCK hint in SELECT statements
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NOLOCK typically (depending on your DB engine) means give me your data, and I don't care what state it is in, and don't bother holding it still while you read from it. It is all at once faster, less resource-intensive, and very very dangerous.
You should be warned to never do an update from or ...
Python CSV error: line contains NULL byte
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print repr(open('my.csv', 'rb').read(200)) # dump 1st 200 bytes of file
and carefully copy/paste (don't retype) the result into an edit of your question (not into a comment).
Also note that if the file is really dodgy e.g. no \r or \n within reasonable distance from the start of the file, the li...
How do you run a crontab in Cygwin on Windows?
Some cygwin commands are .exe files, so you can run them with the standard Windows Scheduler, but others don't have an .exe extension so can't be run from DOS (it seems like).
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How to design a product table for many kinds of product where each product has many parameters
...stead, one table per product type, storing both common product attributes, and product-specific attributes.
Serialized LOB: One table for Products, storing attributes common to all product types. One extra column stores a BLOB of semi-structured data, in XML, YAML, JSON, or some other format. This...
Remove empty lines in text using Visual Studio
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New:
^(?([^\r\n])\s)*\r?$\r?\n
Visual Studio 2013 (thanks to BozoJoe and Joe Johnston):
^\s*$\n
Remove double blank lines
Old:
^:b*\n:b*\n
New:
^(?([^\r\n])\s)*\r?\n(?([^\r\n])\s)*\r?\n
Rolls right off your tongue.
Here is the conversion sheet from MSDN.
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html (+css): denoting a preferred place for a line break
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By using
span.avoidwrap { display:inline-block; }
and wrapping the text I want to be kept together in
<span class="avoidwrap"> Text </span>
it will wrap first in preferred blocks and then in smaller fragments as needed.
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How do you create a hidden div that doesn't create a line break or horizontal space?
...: inline-block or equivalent without the now-displayed div taking up space and moving my other DOM elements around?
– bpromas
Sep 25 '15 at 18:23
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