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Ruby on Rails: How can I revert a migration with rake db:migrate?
...to revert.
eg. if you want to revert a migration with file name 3846656238_create_users.rb
rake db:migrate:down VERSION=3846656238
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Make an image width 100% of parent div, but not bigger than its own width
...
If the image is smaller than parent...
.img_100 {
width: 100%;
}
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Is there an easy way to add a border to the top and bottom of an Android View?
...so see this solution, which also works for TextViews, if you want a border all around: stackoverflow.com/questions/3263611/…
– emmby
Dec 9 '10 at 20:09
26
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TCPServer TCP服务器扩展：在Android设备上创建TCP服务器 · App Inventor 2 中文网
...、ISO-8859-1、UTF-16BE、UTF-16BL、UTF-16。
字符集US-ASCII Charset_USASCII
US-ASCII 字符集常量。
字符集UTF-8 Charset_UTF8
UTF-8 字符集常量。
字符集ISO-Latin-1 Charset_ISO_Latin_1
ISO-8859-1 字符集常量。
字符集UTF-16BE Charset_UTF16BE
UTF-16BE 字符...
Mac OS X Terminal: Map option+delete to “backward delete word”
... trial and error). now i wonder why there is so little documentation about all this.
– victor n.
Oct 7 '15 at 16:14
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Can I obtain method parameter name using Java reflection?
...ve types, and the latter for primitive types.
don't show argument names at all - just the types.
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Repeat String - Javascript
...
Actually, both of your arguments apply to the global namespace as well. If I'm going to expand a namespace and have potential collisions, I'd rather do it 1) not in global 2) in one that is relevant and 3) is easy to refactor. ...
ToList()— does it create a new list?
...tatic void RunChangeList()
{
var objs = Enumerable.Range(0, 10).Select(_ => new MyObject() { SimpleInt = 0 });
var whatInt = ChangeToList(objs); // whatInt gets 0
}
public static int ChangeToList(IEnumerable<MyObject> objects)
{
var objectList = objects.ToList();
objectLi...
vs
...global namespace anyway, and C++11 ratified this practice[*]. So, you basically have three options:
Use <cstdint> and either fully qualify each integer type you use or else bring it into scope with using std::int32_t; etc (annoying because verbose, but it's the right way to do it just like f...
Spring Java Config: how do you create a prototype-scoped @Bean with runtime arguments?
... its BeanFactory#getBean(String name, Object... args) method which states
Allows for specifying explicit constructor arguments / factory method
arguments, overriding the specified default arguments (if any) in the
bean definition.
Parameters:
args arguments to use if creating a prototype using expl...