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What are bitwise operators?
....
Take expr1 && expr2 for example.
Returns expr1 if it can be converted
to false; otherwise, returns expr2.
Thus, when used with Boolean values,
&& returns true if both operands are
true; otherwise, returns false.
a = "Cat" && "Dog" // t && t return...
How does std::forward work? [duplicate]
..._cast<T&&> is confusing. Our intuition for a cast is that it converts a type to some other type -- in this case it would be a conversion to an rvalue reference. It's not! So we are explaining one mysterious thing using another mysterious thing. This particular cast is defined by a tabl...
Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?
...tion is basically performed modulus 2^32 in Java, after which the value is converted back into a signed integer.
Other languages or API's use a dynamic number of bits (BigInteger in Java), raise an exception or set the value to a magic value such as not-a-number.
...
Fast way of finding lines in one file that are not in another?
...t if they have different line endings. The command dos2unix can be used to convert the CRLF line endings to LF only.
– ZeroOne
Mar 27 at 10:30
add a comment
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Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
...rwxrwx--- is 111111000 in binary, and it's very easy to group bits by 3 to convert to the octal, than calculate the decimal representation.
0644 (octal) is 0.110.100.100 in binary (i've added dots for readability), or, as you may calculate, 420 in decimal.
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Changing the size of a column referenced by a schema-bound view in SQL Server
...ethod. not just the return on the search process.
view the table class
select * from class
change the length of the columns FacID (seen as "faci") and classnumber (seen as "classnu") to fit the whole labels.
alter table class modify facid varchar (5);
alter table class modify classnumber v...
How to write to a file in Scala?
...declared)
file.write("Hello my dear file")(codec = Codec.UTF8)
// Convert several strings to the file
// same options apply as for write
file.writeStrings( "It costs" :: "one" :: "dollar" :: Nil)
// Now all options
file.writeStrings("It costs" :: "one" :: "dollar" :: Nil,
...
How to pass an array into jQuery .data() attribute
... @John it is documented in the jQuery API - "Every attempt is made to convert the string to a JavaScript value (this includes booleans, numbers, objects, arrays, and null) otherwise it is left as a string."
– Alnitak
May 20 '11 at 12:51
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How to think in data stores instead of databases?
...e does not have LIKE Keyword) SQL which is GQL.
Data Insert/Update/Delete/Select
This where we all are interested in, as in RDMBS we require one query for Insert, Update, Delete and Select just like RDBMS, Datastore has put, delete, get(dont get too excited) because Datastore put or get in terms of...
Postgres: “ERROR: cached plan must not change result type”
...ng this error.
My application opened a database connection and prepared a SELECT statement for execution.
Meanwhile, another script was modifying the database table, changing the data type of one of the columns being returned in the above SELECT statement.
I resolved this by restarting the applic...