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Rails Migration: Remove constraint
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This should be the selected answer
– nahtnam
Aug 9 '19 at 17:50
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Difference between Rebuild and Clean + Build in Visual Studio
..., right click on the desired project name in the Solution Explorer tab and select Set as StartUp project. The project name now appears in bold. Since the homework solutions typically have only one project, Build or Rebuild Solution is effectively the same as Build or Rebuild .
Compile just compiles...
Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sie
... If the computer is restarted and "Reopen windows when logging back in" is selected, the reopened windows may not see the variables (Perhaps they are opened before the agent is run). Also, if you log in via ssh, the variables will not be set (so you'll need to set them in ~/.bash_profile). Finally, ...
renderpartial with null model gets passed the wrong type
...s to be what it is doing. You will have to cast it to an object for it to select the correct constructor.
– Joel McBeth
Jul 27 '11 at 15:15
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How do I truncate a .NET string?
...inqpad extension methods)
var val = string.Concat(Enumerable.Range(0, 50).Select(i => i % 10));
foreach(var limit in new[] { 10, 25, 44, 64 })
new Perf<string> {
{ "newstring" + limit, n => new string(val.Take(limit).ToArray()) },
{ "concat" + limit, n => string....
What is two way binding?
...ngs when values are transient.
Hope it helps in extend of original answer selected.
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Combining Multiple Commits Into One Prior To Push
...commit: Add feature
b860ddb HEAD@{2}: commit: Add something
Reset to your selected head (I have chosen HEAD@{2})
git reset b860ddb --soft
git status (just to be sure)
Add your new commit
git commit -m "Add new commit"
Note: HEAD@{0} & HEAD@{1} Are now merged into 1 commit, this can be don...
Big O, how do you calculate/approximate it?
...n't a moron, its average case complexity is O(n log n) and it uses a pivot selection strategy that reduces the odds of hitting the O(n²) case). And both bsearch and qsort can be worse if the comparator function is pathological.
– ShadowRanger
Mar 21 '19 at 14:...
The name 'model' does not exist in current context in MVC3
...ew Folder to add the folders. I should have right-clicked the project and selected Add -> Area. Then Visual Studio would have taken care of setting the area up correctly.
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Is SHA-1 secure for password storage?
...") under the assumption that many user passwords will be in that specially selected space.
Hence salting will at least prevent the attacker from using pre-computed tables, in particular pre-computed rainbow tables. This assumes that the attacker will be able to break one password or two; we do not ...