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What is the use case of noop [:] in bash?
...causes bash to give a syntax error:
line 4: syntax error near unexpected token `fi'
line 4: `fi'
Bash can't have empty blocks (WTF). So you add a no-op:
if [ "$foo" != "1" ]
then
#echo Success
:
fi
or you can use the no-op to comment out the lines:
if [ "$foo" != "1" ]
then
: e...
Sql Server string to date conversion
...ptional argument - it is based on .Net's format, so most if not all of the token formats you'd expect to see will be there.
DECLARE @d DATETIME = '2008-10-13 18:45:19';
-- returns Oct-13/2008 18:45:19:
SELECT FORMAT(@d, N'MMM-dd/yyyy HH:mm:ss');
-- returns NULL if the conversion fails:
SELECT TRY...
Why are all fields in an interface implicitly static and final?
...constants, or even immutable. You can define e.g.
interface I {
String TOKEN = SomeOtherClass.heavyComputation();
JButton BAD_IDEA = new JButton("hello");
}
(Beware that doing this inside an annotation definition can confuse javac, relating to the fact that the above actually compiles to a ...
How to loop through files matching wildcard in batch file
... good way to pass commands into f.in and f.out would be to...
for /F %%D "tokens=*" in (dont_pass_through_these.txt) do (
for /F %%E in (%%D) do (
start /wait %%E
)
)
A link to all the Windows XP commands:link
I apologize if I did not answer this correctly. The question was very hard for me to r...
What XML parser should I use in C++? [closed]
...is painful for writing XML. It requires you to do a lot of explicit memory allocation of string names in order to build its DOM. It does provide a kind of string buffer, but that still requires a lot of explicit work on your end. It's certainly functional, but it's a pain to use.
It uses the MIT lic...
What is an alternative to execfile in Python 3?
...py uses a character encoding different from locale.getpreferredencoding(). tokenize.open() could be used instead.
– jfs
Mar 23 '16 at 14:39
...
Where is my .vimrc file?
... I take back the following: -bash: syntax error near unexpected token '$MYVIMRC'
– Yannis Dran
Jan 30 '14 at 2:37
...
How to enter a multi-line command
...
And don't forget to mention that some other tokens also act as line continuators e.g. | and {.
– Keith Hill
Jul 13 '10 at 14:40
1
...
Regex to check whether a string contains only numbers [duplicate]
... @D_N. Fair enough. To your original point, yes 008 is an error token in many PLs because it starts like an octal literal, but in standard mathematical notation base ₁₀ is implied. I don't know which the asker wanted and if I were to reject malformed octal, I should match valid hex a...
How can I parse JSON with C#?
...e(webClient.DownloadString("https://api.foursquare.com/v2/users/self?oauth_token=XXXXXXX"));
Console.WriteLine(result.response.user.firstName);
That last Console.WriteLine is pretty sweet...
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