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What is the use of the square brackets [] in sql statements?
...ame names as SQL keywords, or have spaces in them.
Example:
create table test ( id int, user varchar(20) )
Oh no! Incorrect syntax near the keyword 'user'.
But this:
create table test ( id int, [user] varchar(20) )
Works fine.
...
How to remove folders with a certain name
...according to your wishes, as follows:
find . -name a -exec rm -rf {} \;
Test it first using ls to list:
find . -name a -exec ls {} \;
To ensure this only removes directories and not plain files, use the "-type d" arg (as suggested in the comments):
find . -name a -type d -exec rm -rf {} \;
...
Setting href attribute at runtime
...
Small performance test comparision for three solutions:
$(".link").prop('href',"https://example.com")
$(".link").attr('href',"https://example.com")
document.querySelector(".link").href="https://example.com";
Here you can perform test by ...
How to disable XDebug
...think that my server became slow since I installed XDebug.
So, in order to test my hypothesis I want to disable XDebug completely.
I've been searching for tutorials on how to do this but I can't find such information.
...
Find and extract a number from a string
...
Good point, that'll teach me not to test the code I write in comment! You can also make a string from a char array using the new string(char[]) constructor.
– Thomas
Jun 2 '15 at 8:32
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Return number of rows affected by UPDATE statements
...in SQL Server 2005 onwards is excellent for.
EXAMPLE
CREATE TABLE [dbo].[test_table](
[LockId] [int] IDENTITY(1,1) NOT NULL,
[StartTime] [datetime] NULL,
[EndTime] [datetime] NULL,
PRIMARY KEY CLUSTERED
(
[LockId] ASC
) ON [PRIMARY]
) ON [PRIMARY]
INSERT INTO test_table(StartTime...
Check if a user has scrolled to the bottom
...t() == $(document).height()) {
alert("bottom!");
}
});
You can test it here, this takes the top scroll of the window, so how much it's scrolled down, adds the height of the visible window and checks if that equals the height of the overall content (document). If you wanted to instead ch...
Wait until file is unlocked in .NET
...ce if you have opened the file for read access, you have it, don't have to test for it. Although with the design here you aren't forcing exclusive access so it's even possible you may be able to read the first byte, but no others (byte level locking). From the original question you are likely to o...
Override ActiveRecord attribute methods
...ame, name.capitalize)
end
def name
read_attribute(:name).downcase # No test for nil?
end
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How to debug stream().map(…) with lambda expressions?
In our project we are migrating to java 8 and we are testing the new features of it.
6 Answers
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