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Delete empty lines using sed
...at uses ERE, for example with gnu sed:
sed -r '/^\s*$/d'
(Note that sed does NOT support PCRE.)
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How can I git stash a specific file?
...h push -m welcome_cart app/views/cart/welcome.thtml
OLD ANSWER:
You can do that using git stash --patch (or git stash -p) -- you'll enter interactive mode where you'll be presented with each hunk that was changed. Use n to skip the files that you don't want to stash, y when you encounter the one ...
Is std::unique_ptr required to know the full definition of T?
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Adopted from here.
Most templates in the C++ standard library require that they be instantiated with complete types. However shared_ptr and unique_ptr are partial exceptions. Some, but not all of their members can be instanti...
Saving results with headers in Sql Server Management Studio
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This works for SSMS 2012 - you do need to restart SSMS for the settings to take effect.
– SliverNinja - MSFT
Nov 29 '12 at 15:46
18
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Unicode equivalents for \w and \b in Java regular expressions?
... is a real mess, because it means that things like Alpha, Lower, and Space do not in Java map to the Unicode Alphabetic, Lowercase, or Whitespace properties. This is exceeedingly annoying. Java’s Unicode property support is strictly antemillennial, by which I mean it supports no Unicode property t...
What is so bad about singletons? [closed]
...ve written a Blog Post to comment on this, please see the link below. jorudolph.wordpress.com/2009/11/22/singleton-considerations
– Johannes Rudolph
Nov 22 '09 at 14:35
61
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Use tnsnames.ora in Oracle SQL Developer
... everyone, Just a little update on this old (but quite helpfull) post : don't try to use a symbolic link on Windows. SQL developper doesn't seem to know how to use it. Made me lose some time. Hope it'll save yours.
– Hellday5432
Feb 19 '13 at 10:33
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What is a good pattern for using a Global Mutex in C#?
...ulti-user usage
// edited by 'Marc' to work also on localized systems (don't use just "Everyone")
var allowEveryoneRule =
new MutexAccessRule( new SecurityIdentifier( WellKnownSidType.WorldSid
, null)
, Mu...
Calculate a Running Total in SQL Server
... the Over clause is somewhat limited.
Oracle (and ANSI-SQL) allow you to do things like:
SELECT somedate, somevalue,
SUM(somevalue) OVER(ORDER BY somedate
ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW)
AS RunningTotal
FROM Table
SQL Server gives you no clean solution t...
C/C++ Struct vs Class
.... It logically represents a single value, similar to primitive types (int, double, etc.). 2. It has an instance size under 16 bytes. 3. It is immutable.
– Abhijeet
Dec 13 '15 at 14:05
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