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Handling colon in element ID with jQuery
.../ Timing
have a look at this jsbin which tests and compares the speed of selection methods of IDs with colons
you need to open your firebug console to get the results.
I tested it with firefox 10 and jquery 1.7.2
basically I did a select 10'000 times of a div with a colon in the id - with the d...
What's the best way to check if a file exists in C?
...t; // stat
#include <stdbool.h> // bool type
bool file_exists (char *filename) {
struct stat buffer;
return (stat (filename, &buffer) == 0);
}
and call it like this:
#include <stdio.h> // printf
int main(int ac, char **av) {
if (ac != 2)
return 1;
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How to keep the spaces at the end and/or at the beginning of a String?
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@androiddeveloper, \u indicates a unicode character as an escape sequence (not a unicode char directly in the file). &#nnn; indicates an html entity, which means that you're relying on your xml string being html parsed (it is by default when used in text views)....
How should one use std::optional?
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@Rapptz Line 256: union storage_t { unsigned char dummy_; T value_; ... } Line 289: struct optional_base { bool init_; storage_t<T> storage_; ... } How is that not "a T and a bool"? I completely agree the implementation is very tricky and nontrivial, but conceptua...
django models selecting single field
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thanks for the answer, what if I want to select only 1 or more fields (not all)?
– zentenk
Sep 21 '11 at 16:42
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How can one see the structure of a table in SQLite? [duplicate]
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You can query sqlite_master
SELECT sql FROM sqlite_master WHERE name='foo';
which will return a create table SQL statement, for example:
$ sqlite3 mydb.sqlite
sqlite> create table foo (id int primary key, name varchar(10));
sqlite> select sql f...
PostgreSQL delete with inner join
...ctprice
WHERE m_pricelist_version_id='1000020' AND
m_product_id IN (SELECT m_product_id
FROM m_product
WHERE upc = '7094');
share
|
improve t...
SQL - Select first 10 rows only?
How do I select only the first 10 results of a query?
12 Answers
12
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How to remove a column from an existing table?
...lete a column from an unexisting table ;-)
BEGIN TRANSACTION
IF exists (SELECT * FROM sys.columns c
INNER JOIN sys.objects t ON (c.[object_id] = t.[object_id])
WHERE t.[object_id] = OBJECT_ID(N'[dbo].[MyTable]')
AND c.[name] = 'ColumnName')
BEGIN TRY
ALTER TABLE [dbo].[MyTable] DRO...
Cleanest way to build an SQL string in Java
...uild an SQL string to do database manipulation (updates, deletes, inserts, selects, that sort of thing) - instead of the awful string concat method using millions of "+"'s and quotes which is unreadable at best - there must be a better way.
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