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I personally would define "escaping" in software development in general and coding in particular as follows: Making an exception to match data which otherwise would not be allowed to be matched: I...
I have following setup: flutter plugin with an example app the plugin depends on a native library (flutter_plugin.podspec contains s.dependency 'native-lib', '0.1.0') for local development I pull ...
I have some SQL scripts that contain DDL to create tables and schemas for a database. I'd like to be able to comment this SQL and then use those comments to generate output documentation (in HTML)...
I have two tables with millions of records. Every so often I need to join them and exclude just a handful of records where a bit(1) column is set to 1 instead of 0. I can do it with either, WHERE ...
Context: Azure; Windows Server 2012; IIS 8 First up, here's the (redacted) web.config for reference <rewrite> <rules> <rule name="ReverseProxyInboundRule1" stopProcessing="false"&...
I have JSON that looks something like this: {"id":"n-fsdf-6b6", "name":"JohnSmith", "revisionDate":1591072274000} The JSON data is named CharacterInfo. It comes from a static external URL. The str...
I'm using Jenkins with a branch parameter to specify the branch to build from. Other stuff downstream needs the branch name to not have the leading "origin/" -- just "feature/blahblah" or "bugfix/1...
I have noticed some time ago that Entity Framework assumes a CASCADE behaviour (implicit value, if not specified) for referential constraints (FKs) when deleting items. This means that by default, ...
Say I want to implement a very basic group chat application. I use the H2 database, a user class, a controller, and a text file in the Resources folder that stores the chat texts. All texts would b...
I'm experimenting with different operators and have a hard time understanding the outcome of certain expressions. I try to combine the ++ operators with other operators such as assignment in the sa...
I am working at a proof-of-concept for porting an ASP.NET MVC application to an ASP.NET Core API + Angular SPA. One of the features of the existing application is the ability of an admin (typically...
I am training the following model using Keras as shown: model = tf.keras.models.Sequential([tf.keras.layers.Conv2D(64, (3,3), activation='relu', input_shape=(256, 256, 3)), tf.keras.layers.MaxPooli...
For holding ordered sets of keys, there are well-known data structures (the red-black tree, for example) that support O(log(n)) lookup and insertion algorithms. Of course this means that there triv...
I can't get a response from IPv4 dig on my server but I can get one from IPv6 dig. See the below output: $ dig +short myip.opendns.com a @resolver1.opendns.com # Doesn't return anything, this used ...
I am looking to take a partial derivative of a sympy polynomial with respect to a symbol in the polynomial. In the sympy documentation for poly.diff(...) it gives sample code like this: from sympy ...
When using Result or Option to get a value, the value is wrapped in a Ok or Some. For example, with pattern matching to get a Result: let var: Json = match serde_json::from_str(&my_string) { ...
In programming instead of arrowcode where one has many layers of indented if statements, you can return a result as soon as possible. So instead of, if if end if end if It looks like if ret...
I'm trying to set up a simple test project, to unit test a change I'm working on. The change is to a file inside some existing project. I've tried to set up the includes as the original has it, but...
In the interest of learning from the mistakes of other people: What is the worst code you ever saw? What made it so bad?
I have a number of MySQL stored procedures that use a cursor to go through a select and then pass the results to other stored procedures one row at a time. This can take a while to run, what is hap...
From time to time I will have large structural changes to make on my MySQL DB, things like adding columns, changing datatypes, adding indexes etc. These types of changes result in downtime and what...
Tldr; I don't need to parse HTML, but I need to check if user submitted input conforms to a very strict subset of HTML. Can regex be a suitable tool for this? Details I have a frontend sanitiser th...
I'm trying to make a trait method callable on mutable slices of a type implementing that trait (see main). Rust doesn't like me for it. use core::convert::AsMut; trait A { type B; fn f(m: ...
I have a bunch of stored procedures that look like something this CREATE PROCEDURE example() BEGIN UPDATE STATEMENT A; UPDATE STATEMENT B; UPDATE STATEMENT C; END// When I run them thr...
Note: This question and its answer are an aggregate of the most up to date information about this topic from here. I have noticed that .svn folder has grown a lot and I want to reduce it. How can ...
Note: this is an aggregate of the answer provided for this question. I want to get the LINQ equivalent of the following from SQL: SELECT .. FROM entity1 e1 JOIN entity2 e2 ON e1.field1 = e2.fie...
As a person with no significant background in mathematics and computer science I thought that concatenation and AND are logically identical if not very similar because both add something to somethi...
If one finds where the past number of months equals the past number of days like this, select distinct DATE_SUB(now(), INTERVAL 92 DAY),DATE_SUB(now(), INTERVAL 3 MONTH) The numbers that are curre...
I added a QPushButton to my ui file named pushButton, and manually connected it using connect. There are no errors or warnings emitted at any point in the compilation stage The button does show up...
I've noticed that a lot of sites have something like this going on: <div class="has-margin-0 has-padding-4"> <div>...</div> <div>...</div> ... </div>...
I need to add one column with the same name to all of the tables in my database, how can I find which tables don't currently have a column with that name?
Note: This is basically a question from Stack Overflow that was closed for a very long period of time and I fear it might get closed again as primarily opinion based. I am wondering if my ASP.NET C...
When creating a new Blazor Webassembly project, there is a checkbox ASP.NET Core hosted where if selected will create three projects at once, a blazor webassembly project, an ASP.NET Core project, ...
The default Swing look and feel can be set in $JAVA_HOME/conf/swing.properties What else can be set in this file? I can't find any other documentation of it.
I am writing a spoof of the fs module; the actual storage mechanism is not the the filesystem but rather a database. Overall, however, the api will function exactly like fs. So far my code is compa...
On a Linux server, if you leave the .git folder unprotected in the public_html folder, its possible that someone could download the folder and then gain access to your files. There are two ways I h...
In the example.xsd file I have an import to an external xsd file that looks like this: <schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://test.example.com" ...
I saw at least one compiler (Codewarrior for HC12) warn me if I use a function without using it's return value. Other compilers (clang/gcc) do not issue a warning though, even when using the std=90...
Sometimes I will need to temporarily lock out other MySQL users when I am making large structure changes and want to make sure that nobody else is inputting or changing the data. The other use case...
I have a number of command line PHP scripts that are either run by a user or by Windows Task Scheduler. These scripts use DB and API credentials and I am wondering if there is a better way of stori...
In order to test that coredumps are generated and that they contain useful information which can be retreived with gdb I need to generate a SIGSEGV. Or anything else which causes a coredump. The co...
I'm developing the design framework for a certain Q&A site. We are currently using an external dependency for the tag selector on the post editor, but it has some disadvantages (not fitting int...
When I want to print a number or a string, I can use f-strings (Python >= 3.6) or str.format, and I can use just the variable between braces, or use format specifiers. Ex: num, text = 10, 'abc' ...
I have created this sensational program: #include <stdio.h> int* func (void) { int local=5; return &local; } int main (void) { printf("%d\n", *func()); } This prints 5 even thoug...
I need to rename one column in 170 tables in a MySQL database and its going really slow. The columns all have an index plus a foreign key on them, would dropping the index/temporarily removing the...
Angular CLI official page indicated how to install the CLI, but provides no information about how to upgrade it. I am interested in how to upgrade the CLI.
I'm working on an API to respond some data about a bunch of orders and items. The order and item numbers are always an integer (it's the order.id and item.id value, respectively). Originally the re...
I have heard that it is undefined behaviour to make a pointer point outside boundaries of an array even without dereferencing it. Can that really be true? Consider this code: int main(void) { ...
I have a small new Python 3.8 Flask project with some relative import quirks. For the DB I use SQLAlchemy with Flask-Migrate. My project has the following general structure: controllers/ static/ te...
