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How to remove files from git staging area?
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You can unstage files from the index using
git reset HEAD -- path/to/file
Just like git add, you can unstage files recursively by directory and so forth, so to unstage everything at once, run this from the root directory of your repository:
git reset H...
Qt: How do I handle the event of the user pressing the 'X' (close) button?
I am developing an application using Qt. I don't know which slot corresponds to the event of "the user clicking the 'X'(close) button of the window frame" i.e. this button:
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Wrong requestCode in onActivityResult
...quest code is not wrong. When using v4 support library fragments, fragment index is encoded in the top 16 bits of the request code and your request code is in the bottom 16 bits. The fragment index is later used to find the correct fragment to deliver the result.
Hence for Activities started form f...
How to get record created today by rails activerecord?
...ws.
Typically, if you perform lookups based on created_at column, add an index on the table in your migration file.
add_index :posts, :created_at
Now, to lookup records created today:
Rails 3/4
Post.where("created_at >= ?", Time.zone.now.beginning_of_day)
To lookup posts created on a spe...
git: Switch branch and ignore any changes without committing
...inor changes) or
checkout -f (When switching branches, proceed even if the index or the working tree differs from HEAD. This is used to throw away local changes. )
Or, more recently:
With Git 2.23 (August 2019) and the new command git switch:
git switch -f <branch-name>
(-f is short for --...
Understanding the Gemfile.lock file
...dependencies sourced from a Rubygems server. That may be the main Rubygems index, at Rubygems.org, or it may be a custom index, such as those available from Gemfury and others. Within this section you'll see:
remote: one or more lines specifying the location of the Rubygems index(es)
specs: a list...
What does string::npos mean in this code?
... npos is of size_t, it means it can not be negative... real meaning is max_index, 18446744073709551615 for 64 bit size_t
– NoSenseEtAl
Sep 4 '14 at 12:33
add a comment
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JSR-303 @Valid annotation not working for list of child objects
... and 3.5.1 of JSR 303: Bean Validation. As I explained in my answer to the question Is there a standard way to enable JSR 303 Bean Validation using annotated method, this is the real use of @Valid annotation as per JSR 303.
Edit
Example code: Hibernate Validator- Object Graph. (The list of passenge...
Type.GetType(“namespace.a.b.ClassName”) returns null
...s old - but other people may still be interested): use int index = typeName.IndexOf('`'); if (index > 0) { typeName = _typeName.Substring(0, index + 2); } Note that the T of the generic type is stripped off.
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How to substring in jquery
...ves consistently with slice() on arrays, and allows negative start and end indexes for index-from-end.
– bobince
Nov 8 '10 at 19:08
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