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Rails 3 - can't install pg gem
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edited Mar 25 '13 at 6:47
Perception
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Overloading member access operators ->, .*
... client *operator->() const
{ return target; }
};
struct proxy2 {
proxy *target;
proxy &operator->() const
{ return * target; }
};
void f() {
client x = { 3 };
proxy y = { & x };
proxy2 z = { & y };
std::cout << x.a << y->a...
How to highlight cell if value duplicate in same column for google spreadsheet?
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492
Try this:
Select the whole column
Click Format
Click Conditional formatting
Click Add another ...
Making a WinForms TextBox behave like your browser's address bar
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SQL Server: Make all UPPER case to Proper Case/Title Case
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21 Answers
21
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Do I use , , or for SVG files?
... both resources, see Larry's suggestion below for how to get around that.
2014 update:
If you want a non-interactive svg, use <img> with script fallbacks
to png version (for older IE and android < 3). One clean and simple
way to do that:
<img src="your.svg" onerror="this.src='your.pn...
Insert text with single quotes in PostgreSQL
...escape ' with ''$token$
Which can be nested any number of levels:
$token2$Inner string: $token1$escape ' with ''$token1$ is nested$token2$
Pay attention if the $ character should have special meaning in your client software. You may have to escape it in addition. This is not the case with stand...
Chrome, Javascript, window.open in new tab
... modern browsers, window.open will open in a new tab rather than a popup.
2. You can force a browser to use a new window (‘popup’) by specifying options in the 3rd parameter
3. If the window.open call was not part of a user-initiated event, it’ll open in a new window.
4. A “user initiated...
Generate random numbers uniformly over an entire range
... which can be used as follows:
std::vector<int> vec = {4, 8, 15, 16, 23, 42};
std::random_device random_dev;
std::mt19937 generator(random_dev());
std::shuffle(vec.begin(), vec.end(), generator);
The algorithm will reorder the elements randomly, with a linear complexity.
Boost.Random
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Checking if an Android application is running in the background
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edited May 23 '17 at 12:26
Community♦
111 silver badge
answered May 2 '11 at 20:20
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