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scala vs java, performance and memory? [closed]
... I cant seem to find an answer to:
in general, is there a difference in performance and usage of memory between Scala and Java?
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How to prevent robots from automatically filling up a form?
...extra step impeding the free quick use of the application (I'm not looking for anything like that please).
27 Answers
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In Firebase, is there a way to get the number of children of a node without loading all the node dat
... entire set of data and then counts it client-side, which can be very slow for large amounts of data.
Firebase doesn't currently have a way to count children without loading data, but we do plan to add it.
For now, one solution would be to maintain a counter of the number of children and update it...
Using PowerShell credentials without being prompted for a password
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The problem with Get-Credential is that it will always prompt for a password. There is a way around this however but it involves storing the password as a secure string on the filesystem.
The following article explains how this works:
Using PSCredentials without a prompt
In summa...
How to get image height and width using java?
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The question specifically asks for a way other than using ImageIO.read. Your answer is "use ImageIO.read". Why is this considered a good answer?
– ssimm
Feb 25 '16 at 14:04
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MySQL: Transactions vs Locking Tables
...arious race conditions, the biggest of which is multiple payments being performed on your account, or the receiver's account in parallel. While your code has your balance retrieved and is doing the huge_overdraft_fees() and whatnot, it's entirely possible that some other payment will be running the ...
What is an OS kernel ? How does it differ from an operating system? [closed]
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The technical definition of an operating system is "a platform that consists of specific set of libraries and infrastructure for applications to be built upon and interact with each other". A kernel is an operating system in that sense.
The end-user definition is usually something ...
How to set tbody height with overflow scroll
...table.
to spray evenly the cells , use table-layout:fixed;
DEMO
CSS for your HTML test :
table ,tr td{
border:1px solid red
}
tbody {
display:block;
height:50px;
overflow:auto;
}
thead, tbody tr {
display:table;
width:100%;
table-layout:fixed;/* even columns width...
Make git automatically remove trailing whitespace before committing
..., logs, merges, etc. I'm assuming that the easiest way to do this would be for git to automatically remove trailing whitespace (and other whitespace errors) from all commits as they are applied.
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What's the difference between a catalog and a schema in a relational database?
I used to think schema were the "upper wrapper" object before the database itself.
I mean DB.schema.<what_ever_object_name_under_schema> .
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