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Receiving “fatal: Not a git repository” when attempting to remote add a Git repo
.../index and I needed to remove .git/index.lock before doing git reset. Fine now
– Ivan
Mar 8 '19 at 11:28
1
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How to append contents of multiple files into one file
...irst character in file 1.txt? You can find out by using od -c, and seeing if the first character is a \n.
– radical7
Aug 2 '13 at 0:04
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How can I safely encode a string in Java to use as a filename?
...
If you want the result to resemble the original file, SHA-1 or any other hashing scheme is not the answer. If collisions must be avoided, then simple replacement or removal of "bad" characters is not the answer either.
Inst...
What is the Python equivalent of static variables inside a function?
...foo.counter += 1
print "Counter is %d" % foo.counter
foo.counter = 0
If you want the counter initialization code at the top instead of the bottom, you can create a decorator:
def static_vars(**kwargs):
def decorate(func):
for k in kwargs:
setattr(func, k, kwargs[k])
...
SQL: deleting tables with prefix
...nt generated above will drop all tables in all databases with that prefix. If you want to limit it to a specific database, modify the query to look like this and replace database_name with your own database_name:
SELECT CONCAT( 'DROP TABLE ', GROUP_CONCAT(table_name) , ';' )
AS statement FROM ...
Why does “_” (underscore) match “-” (hyphen)?
...).
(From section 3.3.4.7. Pattern Matching in the MySQL documentation.)
If you want to use the underscore in like as a literal, you have to escape it:
select * from a where name like '%taz\_manual%.pdf%';
share
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How can I determine whether a 2D Point is within a Polygon?
...s after all), but macOS for example uses float for everything. macOS only knows points and a point can translate to one pixel, but depending on monitor resolution, it might translate to something else. On retina screens half a point (0.5/0.5) is pixel. Still, I never noticed that macOS UIs are signi...
How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?
...sk RVM to list the ruby versions available to install by running rvm list known.
In the output you should now see:
# MRI Rubies
...
[ruby-]1.9.2[-p320]
...
The square brackets around the patch level indicate that this is currently RVM's default patch level for ruby 1.9.2.
Finally, to install th...
Reloading the page gives wrong GET request with AngularJS HTML5 mode
... visit the page (/about), e.g. after a refresh, the browser has no way of knowing that this isn't a real URL, so it goes ahead and loads it. However if you have loaded up the root page first, and all the javascript code, then when you navigate to /about Angular can get in there before the browser tr...
How to turn on/off ReactJS 'development mode'?
...ention to toggle dev time helpers off during production. Just using the minified react will leave all those potential optimizations on the table as well.
Ultimately the magic comes down to React embedding references to process.env.NODE_ENV throughout the codebase; these act like a feature toggle.
if...