大约有 42,000 项符合查询结果（耗时：0.0586秒） [XML]
Pad a number with leading zeros in JavaScript [duplicate]
...ements. " - I don't think that's correct. It just sets the length property and join iterates length times. Access of an undefined property always returns undefined. See "5" in Array(5) vs "0" in [1]
– Benjamin Gruenbaum
Jul 24 '14 at 11:56
...
How to delete selected text in the vi editor
I am using PuTTY and the vi editor. If I select five lines using my mouse and I want to delete those lines, how can I do that?
...
ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
...
I had this issue and the fix was to make sure in tnsnames.ora the SERVICE_NAME is a valid service name in your database. To find out valid service names, you can use the following query in oracle:
select value from v$parameter where name='se...
How to select rows that have current day's timestamp?
...
use DATE and CURDATE()
SELECT * FROM `table` WHERE DATE(`timestamp`) = CURDATE()
I guess using DATE still uses INDEX.
see the execution plan on the DEMO
...
Do declared properties require a corresponding instance variable?
...des your getter/setter for you. The auto-coder setter initializes integers and floats to zero, for example. IF you declare an instance variable, and DO NOT specify a corresponding @property, then you cannot use @synthesize and must write your own getter/setter.
You can always override the auto-cod...
How can I view a git log of just one user's commits?
...
This works for both git log and gitk - the 2 most common ways of viewing history.
You don't need to use the whole name:
git log --author="Jon"
will match a commit made by "Jonathan Smith"
git log --author=Jon
and
git log --author=Smith
would also wor...
XSD: What is the difference between xs:integer and xs:int?
I have started to create XSD and found in couple of examples for xs:integer and xs:int .
3 Answers
...
How can I get the actual stored procedure line number from an error message?
When I use SQL Server and there's an error, the error message gives a line number that has no correlation to the line numbers in the stored procedure. I assume that the difference is due to white space and comments, but is it really?
...
Convert int to ASCII and back in Python
I'm working on making a URL shortener for my site, and my current plan (I'm open to suggestions) is to use a node ID to generate the shortened URL. So, in theory, node 26 might be short.com/z , node 1 might be short.com/a , node 52 might be short.com/Z , and node 104 might be short.com/ZZ . When...
Xcode stuck on Indexing
...xing". I can't Build the project anymore. If I try to build, Xcode freezes and I have to force quit. This happens only with this project.
...