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Inserting multiple rows in mysql
.... She asked for 3000 rows, imagine each row has 1kb of data, that's 3MB of raw data already. The array will take up 30MB of memory she already consumes another 30MB from the $table_1 so the script would use 60MB. Just saying, otherwise it's a good solution
– John
...
adb command not found
...ide automatic updates.
install homebrew
ruby -e "$(curl -fsSL
https://raw.githubusercontent.com/Homebrew/install/master/install)"
Install adb
brew cask install android-platform-tools
Start using adb
adb devices
sh...
Why unsigned integer is not available in PostgreSQL?
...ble origin of that question. The desire for unsigned ints is to double the range of ints with the same number of bits, it's an efficiency argument, not the desire to exclude negative numbers, everybody knows how to add a check constraint.
When asked by someone about it, Tome Lane stated:
Basic...
How do I get only directories using Get-ChildItem?
...e items.
Get-ChildItem -Recurse | ?{ $_.PSIsContainer }
If you want the raw string names of the directories, you can do
Get-ChildItem -Recurse | ?{ $_.PSIsContainer } | Select-Object FullName
For PowerShell 3.0 and greater:
dir -Directory
...
Syntax highlighting for Jade in Sublime Text 2?
...ime Text "Packages" folder, call the new folder Jade, then curl -O https://raw.github.com/miksago/jade-tmbundle/master/Syntaxes/Jade.tmLanguage or otherwise download that file into the new folder. The editor will load the syntax immediately.
...
How to equalize the scales of x-axis and y-axis in Python matplotlib?
...er into the api to do this:
from matplotlib import pyplot as plt
plt.plot(range(5))
plt.xlim(-3, 3)
plt.ylim(-3, 3)
plt.gca().set_aspect('equal', adjustable='box')
plt.draw()
doc for set_aspect
share
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How to convert a std::string to const char* or char*?
...o
Simple
Stack memory handling
Cons
Static
Requires string copy
4. Raw memory allocation with automatic storage deletion
std::string foo{ "text" };
auto p = std::make_unique<char[]>(foo.size()+1u);
std::copy(foo.data(), foo.data() + foo.size() + 1u, &p[0]);
Pro
Small memory fo...
sed: print only matching group
...-7
Will result in output of:
2 3.4
-d sets the delimiter
-f selects the range of 'fields' to output, in this case, it's the 6th through 7th chunks of the original string. You can also specify the range as a list, such as 6,7.
...
Listing all permutations of a string/integer
...able<IEnumerable<int>> result =
GetPermutations(Enumerable.Range(1, 3), 3);
Output - a list of integer-lists:
{1,2,3} {1,3,2} {2,1,3} {2,3,1} {3,1,2} {3,2,1}
As this function uses LINQ so it requires .net 3.5 or higher.
...
Are there any standard exit status codes in Linux?
...rgument to exit
128+n: Fatal error signal "n"
255: Exit status out of range (exit takes only integer args in the range 0 - 255)
Part 2: sysexits.h
The ABSG references sysexits.h.
On Linux:
$ find /usr -name sysexits.h
/usr/include/sysexits.h
$ cat /usr/include/sysexits.h
/*
* Copyright (...