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Can I restore a single table from a full mysql mysqldump file?
...e/p' mysql.dump > mytable.dump
This will copy in the file mytable.dump what is located between CREATE TABLE mytable and the next CREATE TABLE corresponding to the next table.
You can then adjust the file mytable.dump which contains the structure of the table mytable, and the data (a list of INSE...
How to concatenate strings of a string field in a PostgreSQL 'group by' query?
... have the string_agg(expression, delimiter) function which will do exactly what the question asked for, even letting you specify the delimiter string:
SELECT company_id, string_agg(employee, ', ')
FROM mytable
GROUP BY company_id;
Postgres 9.0 also added the ability to specify an ORDER BY clause ...
CSS: How to position two elements on top of each other, without specifying a height?
...her boxes.
This means that absolutely positioned elements have no effect whatsoever on their parent element's size and your first <div class="container_row"> will have a height of zero.
So you can't do what you're trying to do with absolutely positioned elements unless you know how tall the...
Why does Apple recommend to use dispatch_once for implementing the singleton pattern under ARC?
What's the exact reason for using dispatch_once in the shared instance accessor of a singleton under ARC?
2 Answers
...
How do I declare a 2d array in C++ using new?
...s sense to optimize, but how is the compiled computation more complex than what needs to be done to resolve the address of a[x][y] ?
– Dronz
May 26 '18 at 4:22
2
...
AES Encryption for an NSString on the iPhone
...So, I got it to work on a Cocoa application on El Capitan with XCode7. Now what I'm trying to do is figure out how to Base64Encode/Base64Decode this data so that it's transmittable without being disturbed in transit, rather than return raw data.
– Volomike
Jan ...
Checking for a dirty index or untracked files with Git
...when I figured out how to add git status information to my prompt.
Here's what I do:
For dirty status:
# Returns "*" if the current git branch is dirty.
function evil_git_dirty {
[[ $(git diff --shortstat 2> /dev/null | tail -n1) != "" ]] && echo "*"
}
For untracked files (Notice t...
How to for each the hashmap? [duplicate]
...
I know I'm a bit late for that one, but I'll share what I did too, in case it helps someone else :
HashMap<String, HashMap> selects = new HashMap<String, HashMap>();
for(Map.Entry<String, HashMap> entry : selects.entrySet()) {
String key = entry.getKey...
In Node.js, how do I “include” functions from my other files?
...
You can require any js file, you just need to declare what you want to expose.
// tools.js
// ========
module.exports = {
foo: function () {
// whatever
},
bar: function () {
// whatever
}
};
var zemba = function () {
}
And in your app file:
// app.js
// ===...
How to send email to multiple recipients using python smtplib?
...e visible address of an email, and the delivery.
msg["To"] is essentially what is printed on the letter. It doesn't actually have any effect. Except that your email client, just like the regular post officer, will assume that this is who you want to send the email to.
The actual delivery however c...