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EF Migratio<em>nem>s: Rollback last applied migratio<em>nem>?
... a<em>nem>swered Aug 13 '12 at 18:38
<em>A<em>nem>dem>rew Peters<em>A<em>nem>dem>rew Peters
10.2k44 gold badges3434 silver badges3434 bro<em>nem>ze badges
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Are there legitimate uses for JavaScript's “with” stateme<em>nem>t?
...<em>nem>ki<em>nem>g. I've seldom fou<em>nem>d a reaso<em>nem> to use this particular la<em>nem>guage feature, <em>a<em>nem>dem> had <em>nem>ever give<em>nem> much thought to how it might cause trouble. <em>Nem>ow, I'm curious as to how I might make effective use of with , while avoidi<em>nem>g its pitfalls.
...
<em>Nem>ull check i<em>nem> a<em>nem> e<em>nem>ha<em>nem>ced for loop
...ecause a<em>nem> empty list wo<em>nem>'t fail.
If you get this list from somewhere else <em>a<em>nem>dem> do<em>nem>'t k<em>nem>ow if it is ok or <em>nem>ot you could create a utility method <em>a<em>nem>dem> use it like this:
for( Object o : safe( list ) ) {
// do whatever
}
<em>A<em>nem>dem> of course safe would be:
public static List safe( List other ) {
ret...
What are dictio<em>nem>ary view objects?
...se<em>nem>tially what their <em>nem>ame says: views are simply like a wi<em>nem>dow o<em>nem> the keys <em>a<em>nem>dem> values (or items) of a dictio<em>nem>ary. Here is a<em>nem> excerpt from the official docume<em>nem>tatio<em>nem> for Pytho<em>nem> 3:
>>> dishes = {'eggs': 2, 'sausage': 1, 'baco<em>nem>': 1, 'spam': 500}
>>> keys = dishes.keys()
>>>...
Store a cl<em>osem>ure as a variable i<em>nem> Swift
I<em>nem> Objective-C, you ca<em>nem> defi<em>nem>e a block's i<em>nem>put <em>a<em>nem>dem> output, store o<em>nem>e of th<em>osem>e blocks that's passed i<em>nem> to a method, the<em>nem> use that block later:
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VIM Ctrl-V Co<em>nem>flict with Wi<em>nem>dows Paste
...tio<em>nem>. You ca<em>nem> use CTRLQ i<em>nem>stead. You ca<em>nem> also use CTRLQ i<em>nem> I<em>nem>sert
mode <em>a<em>nem>dem> Comm<em>a<em>nem>dem>-li<em>nem>e mode to get the old mea<em>nem>i<em>nem>g of CTRLV. But CTRLQ
does<em>nem>'t work for termi<em>nem>als whe<em>nem> it's used for co<em>nem>trol flow.
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Read properties file outside JAR file
...le architecture shall be like this (assumi<em>nem>g your mai<em>nem> program is mai<em>nem>.jar <em>a<em>nem>dem> its mai<em>nem> properties file is mai<em>nem>.properties):
./ - the root of your program
|__ mai<em>nem>.jar
|__ mai<em>nem>.properties
With this architecture, you ca<em>nem> modify a<em>nem>y property i<em>nem> the mai<em>nem>.properties file usi<em>nem>g a<em>nem>y text editor befor...
How to fi<em>nem>d if a <em>nem>ative DLL file is compiled as x64 or x86?
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You ca<em>nem> use DUMPBI<em>Nem> too. Use the /headers or /all flag <em>a<em>nem>dem> its the first file header listed.
dumpbi<em>nem> /headers cv210.dll
64-bit
Micr<em>osem>oft (R) COFF/PE Dumper Versio<em>nem> 10.00.30319.01
Copyright (C) Micr<em>osem>oft Corporatio<em>nem>. All rights reserved.
Dump of file cv210.dll
PE sig<em>nem>ature...
Proper way to declare custom exceptio<em>nem>s i<em>nem> moder<em>nem> Pytho<em>nem>?
...xceptio<em>nem> classes i<em>nem> moder<em>nem> Pytho<em>nem>? My primary goal is to follow whatever st<em>a<em>nem>dem>ard other exceptio<em>nem> classes have, so that (for i<em>nem>sta<em>nem>ce) a<em>nem>y extra stri<em>nem>g I i<em>nem>clude i<em>nem> the exceptio<em>nem> is pri<em>nem>ted out by whatever tool caught the exceptio<em>nem>.
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PHP Fatal error: Usi<em>nem>g $this whe<em>nem> <em>nem>ot i<em>nem> object co<em>nem>text
...ot poi<em>nem>t to $this->foo. It refere<em>nem>ces a class co<em>nem>sta<em>nem>t. Both, self::foo <em>a<em>nem>dem> self::$foo would raise a Fatal Error.
– Gordo<em>nem>
Feb 28 '10 at 12:34
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