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What’s the best way to check if a file exists in C++? (cross platform)
...on in the stream:
#include <fstream>
bool checkExistence(const char* filename)
{
ifstream Infield(filename);
return Infield.good();
}
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Only get hash value using md5sum (without filename)
...ssed by just the name without the [0] index, ie, $md5 contains only the 32 chars of the md5sum.
md5=($(md5sum file))
echo $md5
# 53c8fdfcbb60cf8e1a1ee90601cc8fe2
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How to grep a text file which contains some binary data?
...<test.log | grep whatever
This will change anything less than a space character (except newline) and anything greater than 126, into a . character, leaving only the printables.
If you want every "illegal" character replaced by a different one, you can use something like the following C progr...
Working with select using AngularJS's ng-options
...o work... note the ng-model="blah" which is saying "set $scope.blah to the selected value".
Try this:
<select ng-model="blah" ng-options="item.ID as item.Title for item in items"></select>
Here's more from AngularJS's documentation (if you haven't seen it):
for array data sources...
Convert InputStream to byte array in Java
...lass DataInputStream is primary used to read primary types (Longs, Shorts, Chars...) from a stream, so we can see this usage as a misuse of the class.
– Olivier Faucheux
Apr 8 '15 at 11:51
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How to remove the arrow from a select element in Firefox
I'm trying to style a select element using CSS3. I'm getting the results I desire in WebKit (Chrome / Safari), but Firefox isn't playing nicely (I'm not even bothering with IE). I'm using the CSS3 appearance property, but for some reason I can't shake the drop-down icon out of Firefox.
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Android: Coloring part of a string using TextView.setText()?
...eSpan(android.graphics.Typeface.BOLD);
// Set the text color for first 4 characters
sb.setSpan(fcs, 0, 4, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
// make them also bold
sb.setSpan(bss, 0, 4, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
yourTextView.setText(sb);
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When should I use nil and NULL in Objective-C?
...ke a C pointer) in Objective-C. Like nil , NULL got no value nor address.
char *myChar = NULL;
struct MyStruct *dStruct = NULL;
So if there is a situation, when I need to check my struct (structure type variable) is empty or not then, I will use:
if (dStruct == NULL)
NSLog("The struct is emp...
How can I set the default value for an HTML element?
I thought that adding a "value" attribute set on the <select> element below would cause the <option> containing my provided "value" to be selected by default:
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How to style the option of an html “select” element?
...ed via CSS.
There are replacement plug-ins/libraries that look like a <select> but are actually composed of regular HTML elements that CAN be styled.
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