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What is the colon operator in Ruby?
...what exactly does the : do? I read somewhere about how it's similar to a string, but somehow a symbol.
9 Answers
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How to add line breaks to an HTML textarea?
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if you use general java script and you need to assign string to text area value then
document.getElementById("textareaid").value='texthere\\\ntexttext'.
you need to replace \n or < br > to \\\n
otherwise it gives Uncaught SyntaxError: Unexpected token ILLEGAL on all b...
Django Admin - change header 'Django administration' text
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Here is an import string to add to urls.py: from django.contrib import admin
– serg
Jan 4 '16 at 22:00
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Performance of Arrays vs. Lists
...ts; i++ )
{
j = theList[i];
}
chrono.Stop ();
Console.WriteLine (String.Format("iterating the List took {0} msec", chrono.ElapsedMilliseconds));
chrono.Reset();
chrono.Start();
for( int i = 0; i < numberOfElements; i++ )
{
j = theArray[i];
}
chrono.Stop ();
Console.Write...
MFC CListCtrl使用方法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...n nItem here
}
}
8. 得到item的信息
TCHAR szBuf[1024];
LVITEM lvi;
lvi.iItem = nItemIndex;
lvi.iSubItem = 0;
lvi.mask = LVIF_TEXT;
lvi.pszText = szBuf;
lvi.cchTextMax = 1024;
m_list.GetItem(&lvi);
关于...
ExecutorService that interrupts tasks after a timeout
...lem with the following (very crude) test program:
public static void main(String[] args) throws InterruptedException {
ExecutorService service = new TimeoutThreadPoolExecutor(1, 1, 10, TimeUnit.SECONDS,
new LinkedBlockingQueue<Runnable>(), 10, TimeUnit.MINUTES);
//Executo...
round up to 2 decimal places in java? [duplicate]
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String roundOffTo2DecPlaces(float val)
{
return String.format("%.2f", val);
}
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Building a notification system [closed]
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notification_object.object identifies change type, like a string "friendship" The actual reference to changed object with its extra data that I talk about is in notification_change.notificationObjectID
– Artjom Kurapov
Apr 29 '13 at 7:35
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Best database field type for a URL
...oc/refman/5.0/en/char.html
Values in VARCHAR columns are variable-length strings. The length can be specified as a value from 0 to 255 before MySQL 5.0.3, and 0 to 65,535 in 5.0.3 and later versions. The effective maximum length of a VARCHAR in MySQL 5.0.3 and later is subject to the maximum row s...
How do I replace all line breaks in a string with elements?
...ional note: str.replace("\n", '<br />') (first argument is a regular string) will replace only first occurrence.
– Serge S.
Apr 15 '13 at 20:49
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