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When would anyone use a union? Is it a remnant from the C-only days?
...t_value;
double double_value;
void* ptr_value;
};
};
Then you would use it such as:
/* construct a new float variant instance */
void init_float(struct my_variant_t* v, float initial_value) {
v->type = VAR_FLOAT;
v->float_value = initial_value;
}
/* Increments t...
Javascript “this” pointer within nested function
... explained in the answer above if a function doesn't have object reference then it takes this to be a window object.
– Shivam
Jun 28 '19 at 18:46
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...
OAuth with Verification in .NET
...s to get the user to explicitly grant approval for the app to make oauth-authenticated REST requests to Twitter and its sister services (like TwitPic). To do this you must go through an approval process, involving explicit approval by the user. This happens only the first time the app runs. Like th...
Hibernate: hbm2ddl.auto=update in production?
...es in production. Write your own patches, review them with DBA, test them, then apply them manually.
Theoretically, if hbm2ddl update worked in development, it should work in production too. But in reality, it's not always the case.
Even if it worked OK, it may be sub-optimal. DBAs are paid that ...
How to change port number for apache in WAMP
...r version of WAMP, click the WAMP server icon > Apache > httpd.conf, then change the line Listen 80 to Listen 8080 or any port you want.
Update： On 3.1.6 version of WAMP ， right click on the wamp server icon in the taskbar ，select "tools"-> "Port used by Apache:80" -> "use a po...
How can I update window.location.hash without jumping the document?
...y value like so:
window.location.hash = 'panel-' + id.replace('#', '');
Then, all you need to do is to check for the prefixed hash on page load. As an added bonus, you can even smooth scroll to it since you are now in control of the hash value...
$(function(){
var h = window.location.hash.re...
JSF backing bean structure (best practices)
...one JSF view. If the data in the dropdown lists is particular to the user, then the bean would be kept in session scope. However, if the data applies to all users (such as a dropdown lists of provinces), then the bean would be kept in application scope, so that it can be cached for all users.
Utilit...
How do I run a program with commandline arguments using GDB within a Bash script?
...ooked to info after discovering the 'i' key (index-search). Try: info gdb, then 'i', then '--args'. It'll bring you right to it.
– Apteryx
Jan 15 at 23:04
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...
ReactJS - Does render get called any time “setState” is called?
...the state as immutable and to read-only from props and state
in render() then you can override shouldComponentUpdate with an
implementation that compares the old props and state to their
replacements.
Next part of your question:
If so, why? I thought the idea was that React only rendered...
JUnit: how to avoid “no runnable methods” in test utils classes
...buting another upvote that i can't remove. Make your base class abstract, then JUnit will ignore it. See @gmoore's answer below.
– Ryan Shillington
Mar 21 '17 at 21:57
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