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What does |= (single pipe equal) and &=(single ampersand equal) mean
...ors, translating (very loosely)
x |= y;
into
x = x | y;
and the same for &. There's a bit more detail in a few cases regarding an implicit cast, and the target variable is only evaluated once, but that's basically the gist of it.
In terms of the non-compound operators, & is a bitwise ...
How does _gaq.push(['_trackPageLoadTime']) work?
...to being an opt-out feature.)
_setSiteSpeedSampleRate is the new function for setting the sample rate on this feature; its default value is 1 (as in 1%). To opt out of using this the Site Speed feature, you have to pass a 0 to this function:
_gaq.push(["_setSiteSpeedSampleRate", 0]);
From the ...
How do I use Nant/Ant naming patterns?
I have to admit that I always forgot the syntactical intracacies of the naming patterns for Nant (eg. those used in filesets). The double asterisk/single asterisk stuff seems to be very forgettable in my mind.
...
What's the concept of and differences between Framebuffer and Renderbuffer in OpenGL?
...r. I know that they're required to render, but I want to understand them before use.
2 Answers
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Naming conventions for abstract classes
...eBase , System.Configuration.ConfigurationValidatorBase , System.Windows.Forms.ButtonBase , and, of course, System.Collections.CollectionBase .
...
How to convert a negative number to positive?
...t;>> -n # if you know n is negative
42
>>> abs(n) # for any n
42
Don't forget to check the docs.
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Update an outdated branch against master in a Git repo
...eed to push the changes using -f option. As you are rewriting the history, forceful push is required.
– Opster Elasticsearch Ninja
Oct 16 '18 at 2:34
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How to sync with a remote Git repository?
I forked a project on github, made some changes, so far so good.
5 Answers
5
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Git: How to reuse/retain commit messages after 'git reset'?
... --no-edit; thus, retaining your original commit message.
To make it work for multiple commits, just create a temporary commit with your newest changes and then use an interactive rebase to squash the previous commit (containing the good commit message) with the new temporary one, keeping the commi...
How long is the SHA256 hash?
...esentation, 4 bits are enough to encode each character (instead of 8, like for ASCII), so 256 bits would represent 64 hex characters, therefore you need a varchar(64), or even a char(64), as the length is always the same, not varying at all.
And the demo :
$hash = hash('sha256', 'hello, world!');
...