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How to identify platform/compiler from preprocessor macros?
...d compile at linux, windows, Mac OS. On windows, I must support visual studio and mingw.
4 Answers
...
How to get the contents of a webpage in a shell variable?
...e as:
content=$(wget google.com -q -O -)
echo $content
We use the -O option of wget which allows us to specify the name of the file into which wget dumps the page contents. We specify - to get the dump onto standard output and collect that into the variable content. You can add the -q quiet optio...
Write bytes to file
...tand you correctly, this should do the trick. You'll need add using System.IO at the top of your file if you don't already have it.
public bool ByteArrayToFile(string fileName, byte[] byteArray)
{
try
{
using (var fs = new FileStream(fileName, FileMode.Create, FileAccess.Write))
...
If I revoke an existing distribution certificate, will it mess up anything with existing apps?
I built an iOS app for an organization that has an app already on the store. After weeks of trying to get the guy who has the key to sign the app, they finally came back and said, "Just get it done!". So I am wondering how to proceed. If I go into the provisioning portal, and revoke the dist certifi...
What is the difference between JavaScript and ECMAScript?
... I've deduced, ECMAScript is the standard and JavaScript is the implementation. Is this correct?
16 Answers
...
Are braces necessary in one-line statements in JavaScript?
... you will need them.
This is perfectly valid
if (cond)
alert("Condition met!")
else
alert("Condition not met!")
However it is highly recommended that you always use braces because if you (or someone else) ever expands the statement it will be required.
This same practice follows in all...
What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
...and resolving symlinks (on unixes).
Also note the following example with nio.Paths:
String canonical_path_string = "C:\\Windows\\System32\\";
String absolute_path_string = "C:\\Windows\\System32\\drivers\\..\\";
System.out.println(Paths.get(canonical_path_string).getParent());
System.out.println(...
How persistent is localStorage?
....org/en/DOM/Storage
In DOM Storage it is not possible to specify an expiration period for any of your data. All expiration rules are left up to the user. In the case of Mozilla, most of those rules are inherited from the Cookie-related expiration rules. Because of this you can probably expect most o...
ARC and bridged cast
...
I agree that the description is confusing. Since I just grasped them, I'll try to summarize:
(__bridge_transfer <NSType>) op or alternatively CFBridgingRelease(op) is used to consume a retain-count of a CFTypeRef while transferring it over to...
Pip freeze vs. pip list
...the "requirements format".
Here, django==1.4.2 implies install django version 1.4.2 (even though the latest is 1.6.x).
If you do not specify ==1.4.2, the latest version available would be installed.
You can read more in "Virtualenv and pip Basics",
and the official "Requirements File Format" doc...