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What does 'require: false' in Gemfile mean?
...sk. This would then save memory in the main app processes and startup time etc. App performance, however, should not be affected even if you require these additional gems in every process.
– Michael van Rooijen
Aug 14 '12 at 23:52
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What is the difference between Modal and Push segue in Storyboards?
...er, you will lose all the features like navigation bar, animation, gesture etc when you do so. In this case, you should embed your parent view controller inside navigation view controller first and then make push segue to child view controllers.
2. Modal Segue
A modal segue (i.e. present modally...
Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
...d that this may very depending on compiler version, optimisation settings, etc).
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What makes Lisp macros so special?
...What this says is: Evaluate expr1, and, should it be true, evaluate expr2, etc.
Now try to make this && into a function... thats right, you can't. Calling something like:
and(expr1, expr2, expr3)
Will evaluate all three exprs before yielding an answer regardless of whether expr1 was fals...
GridCtrl 控件FAQ - C/C++ - 清泛网 - 专注C/C++及内核技术
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//设置控件的初始行数和列数
m_Grid.SetRowCount(1);
m_Grid.SetColumnCount(4);
//设置控件背景颜色，这里GetDefaultCell的两个参数分别表示是否是固定行或者是固定列。如果不设定，缺省的颜色为白色。
m_Grid.GetDefaultCell(FALSE, FALSE)->Set...
Insert, on duplicate update in PostgreSQL?
...sient errors - reboots under load, client errors mid-transaction, crashes, etc. You must never, ever rely on SERIAL / SEQUENCE or AUTO_INCREMENT not having gaps. If you need gapless sequences they're more complex; you need to use a counter table usually. Google will tell you more. But be aware gaple...
android button selector
...pressed state? (with all the components above such as round color, stroke, etc). Many thanks!
– pearmak
Dec 24 '12 at 17:13
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AngularJS- Login and Authentication in each route and controller
...erty(prop)) {
delete userProfile[prop];
}
}
};
var fetchUserProfile = function () {
return Auth.getProfile().then(function (response) {
clearUserProfile();
return angular.extend(userProfile, response.data, {
$refresh: fetchUserProfile,
$hasRol...
Types in MySQL: BigInt(20) vs Int(20)
...the developers - as I would have guessed it was width + max value, or bits/etc.
– Sh4d0wsPlyr
May 25 '15 at 23:51
31
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What is a MIME type?
... have chosen to write your first letter in Tamil, and the second in German etc.
In order for your friend to translate those letters, your friend would need to:
(i) identify the language type, and
(ii) and then translate it accordingly.
But identifying a language is not that easy - it's going t...