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Error installing mysql2: Failed to build gem native extension
...l issue (even when using the --with-mysql-config=/usr/local/mysql/bin/mysql_config )
– Americo Savinon
Mar 8 '13 at 21:32
2
...
Undoing a 'git push'
...
Then you need to 'force' push the old reference.
git push -f origin last_known_good_commit:branch_name
or in your case
git push -f origin cc4b63bebb6:alpha-0.3.0
You may have receive.denyNonFastForwards set on the remote repository. If this is the case, then you will get an error which inclu...
How do I measure the execution time of JavaScript code with callbacks?
... put this at the top of my app.
var start = process.hrtime();
var elapsed_time = function(note){
var precision = 3; // 3 decimal places
var elapsed = process.hrtime(start)[1] / 1000000; // divide by a million to get nano to milli
console.log(process.hrtime(start)[0] + " s, " + elapsed....
Integrating the ZXing library directly into my Android application
...t XML file:
<ImageView
android:id="@+id/qrCode"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="50dp"
android:layout_centerHorizontal="true"/>
Code snippet:
// ImageView to display the QR code in. This should be defin...
Why do you use typedef when declaring an enum in C++?
...claring your enum the first way allows you to use it like so:
TokenType my_type;
If you use the second style, you'll be forced to declare your variable like this:
enum TokenType my_type;
As mentioned by others, this doesn't make a difference in C++. My guess is that either the person who wrote...
iphone Core Data Unresolved error while saving
...itical 'userInfo' keys.
Here's a version of the method I've been using. ('_sharedManagedObjectContext' is a #define for '[[[UIApplication sharedApplication] delegate] managedObjectContext]'.)
- (BOOL)saveData {
NSError *error;
if (![_sharedManagedObjectContext save:&error]) {
/...
What is the best way to find the users home directory in Java?
...FolderPath allows you to retrieve special folders, like My Documents (CSIDL_PERSONAL) or Local Settings\Application Data (CSIDL_LOCAL_APPDATA).
Sample JNA code:
public class PrintAppDataDir {
public static void main(String[] args) {
if (com.sun.jna.Platform.isWindows()) {
...
Check if a value is an object in JavaScript
...so objects and should be included in your check.
– JS_Riddler
Dec 21 '12 at 18:25
4
In this case ...
querySelector search immediate children
...;
var hadId = true;
if( !elem.id ) {
hadID = false;
elem.id = 'some_unique_value';
}
sel = '#' + elem.id + sel;
var result = document.querySelectorAll( sel );
if( !hadId ) {
elem.id = '';
}
This certainly isn't jQuery code, but from what I remember, it is basically what they do. Not...
Can grep show only words that match search pattern?
... an explanation for what "\w*th\w*" * means, so I figured I'd post. \w is [_[:alnum:]], so this matches basically any "word" that contains 'th' (since \w doesn't include space). The * after the quoted section is a glob for which files (i.e., matching all files in this directory)
...