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What does “%.*s” mean in printf?
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You can use an asterisk (*) to pass the width specifier/precision to printf(), rather than hard coding it into the format string, i.e.
void f(const char *str, int str_len)
{
printf("%.*s\n", str_len, str);
}
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Java: Static Class?
... have a class full of utility functions. Instantiating an instance of it makes no semantic sense, but I still want to call its methods. What is the best way to deal with this? Static class? Abstract?
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HashSet vs LinkedHashSet
What is the difference between them? I know that
10 Answers
10
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“date(): It is not safe to rely on the system's timezone settings…”
...mezone in a configuration line in your php.ini file. You should have a block like this in your php.ini file:
[Date]
; Defines the default timezone used by the date functions
; http://php.net/date.timezone
date.timezone = America/New_York
If not, add it (replacing the timezone by yours). After con...
How do I get a consistent byte representation of strings in C# without manually specifying an encodi
... need to worry about encoding if the bytes don't need to be interpreted!
Like you mentioned, your goal is, simply, to "get what bytes the string has been stored in".
(And, of course, to be able to re-construct the string from the bytes.)
For those goals, I honestly do not understand why people keep ...
How can I expand the full path of the current file to pass to a command in Vim?
...answered Feb 10 '10 at 1:59
Annika BackstromAnnika Backstrom
13.1k55 gold badges3838 silver badges5252 bronze badges
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On logout, clear Activity history stack, preventing “back” button from opening logged-in-only Activi
... At this point I want this activity to be at the bottom of the history stack so that pressing the "back" button returns the user to Android's home screen.
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What to add for the update portion in ConcurrentDictionary AddOrUpdate
...sionID.ToString();
userDic.AddOrUpdate(
authUser.UserId,
sessionId,
(key, oldValue) => sessionId);
I.e. the Func always returns the sessionId, so that both Add and Update set the same value.
BTW: there is a sample on the MSDN page.
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Insert all values of a table into another table in SQL
...table into another. But the insert statement accepts values, but i would like it to accept a select * from the initial_Table. Is this possible?
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How can you run a command in bash over until success
I have a script and want to ask the user for some information, the script cannot continue until the user fills in this information. The following is my attempt at putting a command into a loop to achieve this but it doesn't work for some reason.
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