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How do I measure the execution time of JavaScript code with callbacks?
...(debug) elapsed_time("end readFile()");
}).listen(8080);
Here's a quick test you can run in a terminal (BASH shell):
for i in {1..100}; do echo $i; curl http://localhost:8080/; done
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imp...
Convert NaN to 0 in javascript
... 0;
...which will have the same effect as above.
If the intent was to test for more than just NaN, then you can do the same, but do a toNumber conversion first.
a = +a || 0
This uses the unary + operator to try to convert a to a number. This has the added benefit of converting things like nu...
Why do std::shared_ptr work
...t will be used to destroy it.
The deleter function of your shared_ptr<Test>, given the way you constructed it, is the normal one for Test, which converts the pointer to Test* and deletes it.
When you push your shared_ptr<Test> into the vector of shared_ptr<void>, both of those a...
How do I pass multiple parameters into a function in PowerShell?
...ult shells like cmd, sh, bash, etc.
– Bender the Greatest
Jun 6 '19 at 21:52
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How to get “wc -l” to print just the number of lines without file name?
...
@user: Test it. By far the slowest part will be reading the file off disk.
– sarnold
Apr 19 '12 at 23:44
11
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JavaScript isset() equivalent
...T pass a function to our isset() that returns the value we're
// trying to test(ES6 arrow function)
isset(() => some) // false
// Defining objects
let some = { nested: { value: 'hello' } }
// More tests that never throw an error
isset(() => some) // true
isset(() => some.nested) // true
i...
Given a class, see if instance has method (Ruby)
...ng instance_methods and include? when method_defined? does the job.
class Test
def hello; end
end
Test.method_defined? :hello #=> true
NOTE
In case you are coming to Ruby from another OO language OR you think that method_defined means ONLY methods that you defined explicitly with:
def my_...
How to check whether a given string is valid JSON in Java
...atch the exception:
import org.json.*;
public boolean isJSONValid(String test) {
try {
new JSONObject(test);
} catch (JSONException ex) {
// edited, to include @Arthur's comment
// e.g. in case JSONArray is valid as well...
try {
new JSONArray(te...
How to display HTML tags as plain text [duplicate]
... may use htmlspecialchars()
<?php
$new = htmlspecialchars("<a href='test'>Test</a>", ENT_QUOTES);
echo $new; // &lt;a href=&#039;test&#039;&gt;Test&lt;/a&gt;
?>
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CSS Printing: Avoiding cut-in-half DIVs between pages?
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Tested page-break-inside in wkhtmltopdf in version 0.11 and it works.
– cmc
Feb 20 '12 at 17:23
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