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Why is 128==128 false but 127==127 is true when comparing Integer wrappers in Java?
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When you compile a number literal in Java and assign it to a Integer (capital I) the compiler emits:
Integer b2 =Integer.valueOf(127)
This line of code is also generated when you use autoboxing.
valueOf is implemented such that certain numbers are "pooled", and it returns the same instance f...
How can I pass data from Flask to JavaScript in a template?
My app makes a call to an API that returns a dictionary. I want to pass information from this dict to JavaScript in the view. I am using the Google Maps API in the JS, specifically, so I'd like to pass it a list of tuples with the long/lat information. I know that render_template will pass these ...
jQuery Tips and Tricks
...tion.
UPDATE: live() and die() are deprecated in jQuery 1.7. See http://api.jquery.com/on/ and http://api.jquery.com/off/ for similar replacement functionality.
UPDATE2: live() has been long deprecated, even before jQuery 1.7. For versions jQuery 1.4.2+ before 1.7 use delegate() and undelegate()...
File Upload using AngularJS
...mes as a fallback
https://github.com/danialfarid/ng-file-upload - uses FileAPI/Flash as a fallback
And some other options:
https://github.com/nervgh/angular-file-upload/
https://github.com/uor/angular-file
https://github.com/twilson63/ngUpload
https://github.com/uploadcare/angular-uploadcare
O...
How can I lock a file using java (if possible)
...nly not tested.)
Note the section entitled "platform dependencies" in the API doc for FileLock.
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Checking for a null int value from a Java ResultSet
...docs. It worth a separate thread on SO imho. (java.sun.com/j2se/1.4.2/docs/api/java/sql/…)
– Roman
May 27 '10 at 10:58
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Java: getMinutes and getHours
...tead of standard java.util.Date classes. Joda Time library has much better API for handling dates.
DateTime dt = new DateTime(); // current time
int month = dt.getMonth(); // gets the current month
int hours = dt.getHourOfDay(); // gets hour of day
See this question for pros and cons of usin...
How to perform file system scanning
...ugh people still hit this answer, that I thought I'd update it for the Go1 API. This is a working example of filepath.Walk(). The original is below.
package main
import (
"path/filepath"
"os"
"flag"
"fmt"
)
func visit(path string, f os.FileInfo, err error) error {
fmt.Printf("Visited:...
What is the Swift equivalent to Objective-C's “@synchronized”?
...you need to be careful. Your block might be executed on some other thread. API docs say: "As an optimization, this function invokes the block on the current thread when possible."
– bio
Sep 24 '15 at 17:57
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Detect element content changes with jQuery
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These are mutation events.
I have not used mutation event APIs in jQuery, but a cursory search led me to this project on GitHub. I am unaware of the project's maturity.
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