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MySQL: Transactions vs Locking Tables
...his:
$balance = "GET BALANCE FROM your ACCOUNT";
if ($balance < $amount_being_paid) {
charge_huge_overdraft_fees();
}
$balance = $balance - $amount_being paid;
UPDATE your ACCOUNT SET BALANCE = $balance;
$balance = "GET BALANCE FROM receiver ACCOUNT"
charge_insane_transaction_fee();
$balanc...
How to detect incoming calls, in an Android device?
...this:
Manifest:
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
<!--This part is inside the application-->
<receiver android:name=".CallReceiver" >
<intent-fil...
How do I make an http request using cookies on Android?
...ost("https://portal.sun.com/amserver/UI/Login?" +
"org=self_registered_users&" +
"goto=/portal/dt&" +
"gotoOnFail=/portal/dt?error=true");
List <NameValuePair> nvps = new ArrayList <NameValuePair>();
nvps.add(new Ba...
How to see which commits in one branch aren't in the other?
...The documentation provides a concrete example: git-scm.com/docs/git-cherry#_concrete_example
– ams
Jul 23 '19 at 15:01
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How to create a shared library with cmake?
...
Always specify the minimum required version of cmake
cmake_minimum_required(VERSION 3.9)
You should declare a project. cmake says it is mandatory and it will define convenient variables PROJECT_NAME, PROJECT_VERSION and PROJECT_DESCRIPTION (this latter variable necessitate cmake 3...
Why should I care about lightweight vs. annotated tags?
...imple to me:
https://www.kernel.org/pub/software/scm/git/docs/git-tag.html#_on_backdating_tags
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Peak detection in a 2D array
...ow you do it:
import numpy as np
from scipy.ndimage.filters import maximum_filter
from scipy.ndimage.morphology import generate_binary_structure, binary_erosion
import matplotlib.pyplot as pp
#for some reason I had to reshape. Numpy ignored the shape header.
paws_data = np.loadtxt("paws.txt").resh...
What are Vertex Array Objects?
...is first bound, you assign these members by calling
glEnableClientState(GL_VERTEX_ARRAY); glVertexPointer...;
glEnableClientState(GL_NORMAL_ARRAY); glNormalPointer...;
and so on. Which attributes are enabled and the pointers you supply are stored in the VAO.
After that when you bind the VAO agai...
Invalidating JSON Web Tokens
...s post addresses the question: https://github.com/dentarg/blog/blob/master/_posts/2014-01-07-angularjs-authentication-with-cookies-vs-token.markdown
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PHP exec() vs system() vs passthru()
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@OZ_ I've come to the situation where I had to do very expensive computations. No PHP-Module were (is) available for that. I wrote my own C program and I invoke it with passthru(). Sometimes portability can be less important tha...