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Install NPM into home directory with distribution nodejs package (Ubuntu)
... up a package root in my homedir to hold the Node "global" packages:
$ NPM_PACKAGES="$HOME/.npm-packages"
$ mkdir -p "$NPM_PACKAGES"
Set NPM to use this directory for its global package installs:
$ echo "prefix = $NPM_PACKAGES" >> ~/.npmrc
Configure your PATH and MANPATH to see commands i...
How can I get useful error messages in PHP?
...is page in the PHP documentation for information on the 2 directives: error_reporting and display_errors. display_errors is probably the one you want to change. If you can't modify the php.ini, you can also add the following lines to an .htaccess file:
php_flag display_errors on
php_value e...
Crash logs generated by iPhone Simulator?
...gured out is how to get them to generate even if the debugger grabs the EXC_BAD_ACCESS signal.
Update
Currently, (OSX 10.11.6), the .crash logs in ~/Library/Logs/DiagnosticReports, are when the emulator itself crashes. Logs for an app crashing (but the emulator device is still running fine), ar...
Handle ModelState Validation in ASP.NET Web API
...ile
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2).ConfigureApiBehaviorOptions(options =>
{
options.InvalidModelStateResponseFactory = (context) =>
{
var errors = context.ModelState.Values.SelectMany(...
How to log PostgreSQL queries?
...
In your data/postgresql.conf file, change the log_statement setting to 'all'.
Edit
Looking at your new information, I'd say there may be a few other settings to verify:
make sure you have turned on the log_destination variable
make sure you turn on the logging_collect...
How do I write JSON data to a file?
...pen('data.json', 'w', encoding='utf-8') as f:
json.dump(data, f, ensure_ascii=False, indent=4)
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(How) can I count the items in an enum?
...ee an extra item in the enum, i.e.
enum foobar {foo, bar, baz, quz, FOOBAR_NR_ITEMS};
So then you can do:
int fuz[FOOBAR_NR_ITEMS];
Still not very nice though.
But of course you do realize that just the number of items in an enum is not safe, given e.g.
enum foobar {foo, bar = 5, baz, quz = ...
What are paramorphisms?
...sibly simpler still is
safeTail :: [x] -> Maybe [x]
safeTail = para (\ _ xs _ -> Just xs) Nothing
in which the "cons" branch ignores its recursively computed argument and just gives back the tail. Evaluated lazily, the recursive computation never happens and the tail is extracted in constan...
Is the != check thread safe?
...g/Object;
ALOAD 0
GETFIELD test/Test1.a : Ljava/lang/Object;
IF_ACMPEQ L1
...
as we can see it loads field a to local vars twice, it's a non-atomic operation, if a was changed in between by another thread comparison may produce false.
Also, memory visibility problem is relevant here...
How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
...tp://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<!-- Config here. -->
</web-app>
See also:
JSTL core taglib documentation (for the right taglib URIs)
JSTL tag info page (for JSTL download links and web.xml examples)
...