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SQL, Postgres OIDs, What are they and why are they useful?
...efault. Performing a SELECT * will now include this column. Note that this extra “surprise” column may break naïvely written SQL code.
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What is the rationale for all comparisons returning false for IEEE754 NaN values?
...l compare unordered with everything, including itself.
As far as writing extra code to handle NaNs goes, it is usually possible (though not always easy) to structure your code in such a way that NaNs fall through properly, but this is not always the case. When it isn't, some extra code may be nec...
How to add one day to a date? [duplicate]
... database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.* classes.
Where to obtain the java.time classes?
Java SE 8, Java SE 9, Java SE 10, and later
Built-in.
Part of the standard Java API with a bundled implementation.
Java 9 adds some minor ...
C++ : why bool is 8 bits long?
...or booleans, in a way. I seem to remember Pascal implementing sets as bit strings. That is, for the following set:
{1, 2, 5, 7}
You might have this in memory:
01100101
You can, of course, do something similar in C / C++ if you want. (If you're keeping track of a bunch of booleans, it could ...
Unknown provider: $modalProvider
...
Just an extra side note for an issue I also experienced today:
I had a similar error "Unknown provider: $aProvider" when I turned on minification/uglify of my source code.
As mentioned in the Angular docs tutorial (paragraph: "A No...
What is DOCTYPE?
...
In HTML (including XHTML) as used on web pages, DOCTYPE is a string that triggers one of a few browser modes (quirks mode, standards mode, almost standards mode), depending on the exact spelling of the DOCTYPE. You want to use it to select a browser mode that best suits your page.
For...
When should I use a trailing slash in my URL?
...ile) when a directory is accessed, so /foo/ is /foo/index.html without the extra mess. Also, in the past, browsers would append / to the domain name, but they (Firefox, Chrome, Opera) have since changed to omit the / when accessing the homepage.
– 0b10011
Mar 7...
When to use static classes in C# [duplicate]
...ery cheap operation in most languages, so speed is not an issue. Adding an extra line of code to the consumer is a low cost for laying the foundation of a much more maintainable solution in the future. And finally, if you want to avoid creating instances, simply create a singleton wrapper of your cl...
How can I backup a remote SQL Server database to a local drive?
...RedGate etc. Maybe I'v paranoia but I think most of third party tools have extra code and will got my control and reduce simplicity and clarifying of script. Thanks so much.
– QMaster
Dec 27 '14 at 13:47
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What do you call the -> operator in Ruby?
...t simply do a drop-in replacement in all cases (because sometimes you need extra parentheses for lambda).
– Kelvin
Mar 15 '17 at 22:16
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