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JSP tricks to make templating easier?
...g like template inheritance ( Django style) or at least be able to have a base.jsp file containing the header and the footer, so I can insert content later.
...
How do iOS Push Notifications work?
...ples, see Registering to Receive Remote Notifications.
To establish HTTP/2-based TLS sessions with APNs, you must ensure that a GeoTrust Global CA root certificate is installed on each of your providers. If a provider is running macOS, this root certificate is in the keychain by default. On other sy...
Diagnosing Memory Leaks - Allowed memory size of # bytes exhausted
...I'm afraid. The simplest instrument is to selectively place calls to memory_get_usage and narrow it down to where the code leaks. You can also use xdebug to create a trace of the code. Run the code with execution traces and show_mem_delta.
...
Emacs bulk indent for Python
...he whole region to the right.
(defun my-python-tab-command (&optional _)
"If the region is active, shift to the right; otherwise, indent current line."
(interactive)
(if (not (region-active-p))
(indent-for-tab-command)
(let ((lo (min (region-beginning) (region-end)))
(...
File system that uses tags rather than folders?
...
What you are asking for is a Database File System. I know of one experimental implementation for Linux called DBFS. Microsoft started developing Windows Future Storage (WinFS) - it was planned to ship with Vista but due to technical problems the project was ...
Difference between shadowing and overriding in C#?
...shadow
Console.WriteLine(((A)clB).Bar()); // output 1
Suppose you have a base class and you use the base class in all your code instead of the inherited classes, and you use shadow, it will return the values the base class returns instead of following the inheritance tree of the real type of the o...
What is the difference between HAVING and WHERE in SQL?
...
Check out this w3schools link for more information
Syntax:
SELECT column_name, aggregate_function(column_name)
FROM table_name
WHERE column_name operator value
GROUP BY column_name
HAVING aggregate_function(column_name) operator value
A query such as this:
SELECT column_name, COUNT( column_n...
How to read from a file or STDIN in Bash?
...
Here is the simplest way:
#!/bin/sh
cat -
Usage:
$ echo test | sh my_script.sh
test
To assign stdin to the variable, you may use: STDIN=$(cat -) or just simply STDIN=$(cat) as operator is not necessary (as per @mklement0 comment).
To parse each line from the standard input, try the follo...
How do you set the Content-Type header for an HttpClient request?
...
?? typeof(System.Net.Http.Headers.HttpRequestHeaders)
.GetField("s_invalidHeaders", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static);
if (field != null)
{
var invalidFields = (HashSet<string>)field.GetValue(null);
invalidFields.Remove("Content-Type...
What's the “average” requests per second for a production web application?
...itching the jdk to an earlier release fixed the issue. We were on jdk1.6.0_26 I believe.
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