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What is std::string::c_str() lifetime?
...allocate the memory for the null-terminated version of the string returned by c_str(). For example, size() and length() are const, so you can call them without worrying about the string changing, but clear() is not const.
– Kristopher Johnson
Dec 24 '13 at 20:...
Convert SVG to image (JPEG, PNG, etc.) in the browser
... it handles all the SVG parsing that an SVG-supporting browser already provides for free. I'm not sure if this satisfies the original use-case, but if so, then see this resource for details.
– Premasagar
Oct 3 '13 at 8:19
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Cannot pass null argument when using type hinting
...of NullFoo to override abstract methods, even though they have no meaning (by definition of null).
– TheOperator
Nov 9 '16 at 8:57
1
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Escape angle brackets in a Windows command prompt
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For instance
echo A->B
will no work since '>' has to be escaped by '^':
echo A-^>B
See also escape sequences.
There is a short batch file, which prints a basic set of special character and their escape sequences.
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NSLog the method name with Objective-C in iPhone
...u can print its method name ("message") in either of two ways as described by this Codec blog post:
Using Objective-C call to NSStringFromSelector:
NSLog(@"%@", NSStringFromSelector(selector) );
Using straight C:
NSLog(@"%s", selector );
This information drawn from the linked Apple doc page as...
How to convert a Drawable to a Bitmap?
...);
URL url_value = new URL(name);
ImageView profile = (ImageView)v.findViewById(R.id.vdo_icon);
if (profile != null) {
Bitmap mIcon1 =
BitmapFactory.decodeStream(url_value.openConnection().getInputStream());
profile.setImageBitmap(mIcon1);
}
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Difference between “change” and “input” event for an `input` element
...d textarea elements when an alteration to the element's value is committed by the user. Unlike the input event, the change event is not necessarily fired for each alteration to an element's value.
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/change_event
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“find: paths must precede expression:” How do I specify a recursive search that also finds files in
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By way of example, you can see what's happening if you do echo *test.c ... the result won't be echo expanding the wildcard, but the shell itself. The simple lesson is if you're using wildcards, quote the filespec :-)
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Are there any style options for the HTML5 Date picker?
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The following eight pseudo-elements are made available by WebKit for customizing a date input’s textbox:
::-webkit-datetime-edit
::-webkit-datetime-edit-fields-wrapper
::-webkit-datetime-edit-text
::-webkit-datetime-edit-month-field
::-webkit-datetime-edit-day-field
::-webkit-...
git produces Gtk-WARNING: cannot open display
...EL 5 (CentOS 5 etc.) is in file /etc/profile.d/gnome-ssh-askpass.sh (owned by openssh-askpass package) where SSH_ASKPASS environment variable is blindy set to /usr/libexec/openssh/gnome-ssh-askpass and this does not work if there is no X (ie. logged in via PuTTY over SSH). You may simply comment out...