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Using scanf() in C++ programs is faster than using cin?
...nds
scanf version: 6.4 seconds
Changing the compiler's optimization settings didn't seem to change the results much at all.
Thus: there really is a speed difference.
EDIT: User clyfish points out below that the speed difference is largely due to the iostream I/O functions maintaining sync...
WPF Textblock, linebreak in Text attribute
... need the "&amp;" as mentioned though. This method will also work when setting the text like so: <Setter Property="Text" Value="Line 1&#10;&#10;Line 2" />
– EdwardM
Jun 25 '18 at 17:24
...
mysql :: insert into table, data from another table?
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
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else {
createEditor();
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How do I fix the “You don't have write permissions into the /usr/bin directory” error when installin
I'm trying to install Rails 3 on a brand new MacBook Pro running OS X 10.6.3, Ruby 1.8.7, and Rails 2.3.5 and I'm wondering if I've hosed myself. So far, I've run these commands:
...
Best way to generate random file names in Python
...parameter is False, the file is not
automatically deleted.
Full parameter set:
tempfile.NamedTemporaryFile([mode='w+b'[, bufsize=-1[, suffix=''[, prefix='tmp'[, dir=None[, delete=True]]]]]])
it is also possible to specify the prefix for the temporary file (as one of the various parameters that c...
iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationForm
...u are displaying the modal with a UINavigationController. You then have to set the disablesAutomaticKeyboardDismissal on the navigation controller and not on the view controller. You can easily do this with categories.
File: UINavigationController+KeyboardDismiss.h
#import <Foundation/Foundatio...
Convert a Unicode string to a string in Python (containing extra symbols)
...
See unicodedata.normalize
title = u"Klüft skräms inför på fédéral électoral große"
import unicodedata
unicodedata.normalize('NFKD', title).encode('ascii', 'ignore')
'Kluft skrams infor pa federal electoral groe'
...
JS: Check if date is less than 1 hour ago?
...or adding hours to a date
Date.prototype.addHours= function(hrs){
this.setHours(this.getHours()+hrs);
return this;
}
Call function like this:
//test alert(new Date().addHours(4));
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How do I determine file encoding in OS X?
...command line, just type ls -l@ <filename> to see what attributes are set for the file. To see the actual attribute, type xattr -p com.apple.TextEncoding <filename>
– Edward Falk
Aug 4 '16 at 3:13
...
Cross-thread operation not valid: Control 'textBox1' accessed from a thread other than the thread it
...le:
How to: Make Thread-Safe Calls to Windows Forms Controls
So instead of setting the text property directly in the serialport1_DataReceived method, use this pattern:
delegate void SetTextCallback(string text);
private void SetText(string text)
{
// InvokeRequired required compares the thread ID...