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Delete all but the most recent X files in bash
Is there a simple way, in a pretty standard UNIX environment with bash, to run a command to delete all but the most recent X files from a directory?
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Java: how do I get a class literal from a generic type?
... String.class denotes the Class
object that represents the type
String and is identical to the
Class object that is returned when
method getClass is invoked on a
String object. A class literal can
be used for runtime type checks and
for reflection.
Parameterized types lose their ...
SQL DROP TABLE foreign key constraint
...ferencing your table, you could use this SQL (if you're on SQL Server 2005 and up):
SELECT *
FROM sys.foreign_keys
WHERE referenced_object_id = object_id('Student')
and if there are any, with this statement here, you could create SQL statements to actually drop those FK relations:
SELECT
'...
How to do stateless (session-less) & cookie-less authentication?
Bob uses a web application in order to achieve something. And:
2 Answers
2
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Disable file preview in VS2012
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In Tools > Options > Environment > Tabs and Windows, you can disable it by unckecking "Solution explorer" under Preview tab.
I find it using the "Quick launch" new feature. Simply type "preview", and a link to the setting will be suggested. Great new feature of VS...
Run a single migration file
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Sometimes you need a './' in front of the require path, and it definitely doesn't update the schema_migrations.
– Beardo
Aug 26 '11 at 15:26
14
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How do I copy a version of a single file from one git branch to another?
...ng the commit hash you can pull files from any commit
This works for files and directories
overwrites the file myfile.txt and mydir
Wildcards don't work, but relative paths do
Multiple paths can be specified
an alternative:
git show commit_id:path/to/file > path/to/file
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How can I specify a local gem in my Gemfile?
...ts under version control. It lets you keep checking in both projects - gem and project using the gem - such that others can don't have to check out the gem source or share the same paths.
– mahemoff
Jun 12 '14 at 8:42
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How to make graphics with transparent background in R using ggplot2?
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Updated with the theme() function, ggsave() and the code for the legend background:
df <- data.frame(y = d, x = 1, group = rep(c("gr1", "gr2"), 50))
p <- ggplot(df) +
stat_boxplot(aes(x = x, y = y, color = group),
fill = "transparent" # for the...
What are the benefits to marking a field as `readonly` in C#?
...instance, there is no danger of passing an immutable structure to another random portion of code. They can't changed it ever so you can program reliably against that structure.
Here is a good entry about one of the benefits of immutability: Threading
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