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Why does the C preprocessor interpret the word “linux” as the constant “1”?
...IT__ 8
#define __UINT8_MAX__ 255
#define __WINT_MAX__ 2147483647
#define __ORDER_LITTLE_ENDIAN__ 1234
#define __SIZE_MAX__ 18446744073709551615UL
#define __WCHAR_MAX__ 2147483647
#define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
#define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
#define __GCC_HAVE_SYNC_COMPARE...
Efficiently convert rows to columns in sql server
... yourtable
group by ColumnName, id
order by id
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set @query = N'SELECT ' + @cols + N' from
(
select value, ColumnName
fr...
java.net.ConnectException: localhost/127.0.0.1:8080 - Connection refused
...
e.g if your URL is like http://localhost:8080/Getdata.php or http://127.0.0.1:8080/Getdata.php then you have to change it as use http://10.0.2.2:8080/Getdata.php
– Vikas Patidar
Jan 30 '14 at 8:46
...
.htaccess: Invalid command 'RewriteEngine', perhaps misspelled or defined by a module not included i
I have this error when trying to browse php files locally
8 Answers
8
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What to do Regular expression pattern doesn't match anywhere in string?
...xpression. As you noticed, regular expressions enforce a certain amount of order. So what you need to do instead is to first match the CONTEXT of what you're trying to extract, then do submatching on the data you want.
EDIT: However, I will agree that in general, using an HTML parser is probably ea...
Extracting bits with a single multiplication
...acent to each other in the original, AND you want to keep them in the same order, then you can still do it. And for the purpose of the (N-1) rule they count as two bits.
There is another insight - inspired by the answer of @Ternary below (see my comment there). For each interesting bit, you only n...
Get table column names in MySQL?
...
How about this:
SELECT @cCommand := GROUP_CONCAT( COLUMN_NAME ORDER BY column_name SEPARATOR ',\n')
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = 'my_database' AND TABLE_NAME = 'my_table';
SET @cCommand = CONCAT( 'SELECT ', @cCommand, ' from my_database.my_table;');
PREPARE xCo...
Understanding Python super() with __init__() methods [duplicate]
... will call the correct next parent class function in the Method Resolution Order (MRO).
In Python 3, we can call it like this:
class ChildB(Base):
def __init__(self):
super().__init__()
In Python 2, we are required to use it like this:
super(ChildB, self).__init__()
Without super...
How to detect duplicate values in PHP array?
I am working with a one dimensional array in PHP. I would like to detect the presence of duplicate values, then count the number of duplicate values and out put the results. For example, given the following array:
...
Troubleshooting “The use statement with non-compound name … has no effect”
...
PHP's use isn't the same as C++'s using namespace; it allows you to define an alias, not to "import" a namespace and thus henceforth omit the namespace qualifier altogether.
So, you could do:
use Blog\Article as BA;
... to shorten it, but you cannot get rid of it entirely.
...