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Android buildscript repositories: jcenter VS mavencentral
...vel of geeky. And with some more reason for example a security concern and etc, Android Studio team decided to switch the default repository to jcenter instead as you can see that once you create a new project from latest version of Android Studio, jcenter() would be automatically defined instead of...
Using PHP with Socket.io
...y suck. Each were very slow, when something is broken, support is horrible etc. On the other hand, in Finland it's not rare to get decent quality web hosting (but with php/mysql/static files only) with adsl subscription, without paying any extra. So no, being able to buy crappy VPS for $5 is definit...
Unusual shape of a textarea?
...le. And I think you can also handle the rest of the CSS (font-size, color, etc.) :)
Full code sample
.block_left {
background-color: red;
height: 70px;
width: 100px;
float: left;
border-right: 2px solid blue;
border-bottom: 2px solid blue;
}
.block_right {
background-c...
Fetch the row which has the Max value for a column
...d AND t1."Date" < t2."Date")
WHERE t2.UserId IS NULL;
In other words: fetch the row from t1 where no other row exists with the same UserId and a greater Date.
(I put the identifier "Date" in delimiters because it's an SQL reserved word.)
In case if t1."Date" = t2."Date", doubling appears. Usuall...
WPF: How to display an image at its original size?
...
Here is a similar question. Generally setting Stretch="None" is enough.
It is also very important what DPI has the image set in metadata. It took me quite a while before figuring out that if the image's DPI is different from the monitor's DPI (usually 96), WPF will automat...
Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant f
...d setting values for those bindable properties (i.e. shadow, corner radius etc.) then remove those properties from UIView extension (for some reason) but the following <userDefinedRuntimeAttributes> remained in xml (of foo.storyboard):
<userDefinedRuntimeAttributes>
<userDefinedRun...
Difference between database and schema
...initions for other database objects such as tables,views,stored procedures etc.
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What is the difference between buffer and cache memory in Linux?
...p understand:
Buffer is for storing file metadata (permissions, location, etc). Every memory page is kept track of here.
Cache is for storing actual file contents.
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When should you branch?
...t also depends on the SCM tool you are using. Modern SCMs (git, mercurial, etc.) make it increasingly easy to create and destroy branches whenever needed. This allows you to, for example, make one branch per bug that you are working on. Once you merge your results into the trunk, you discard the bra...
Is there a cross-browser onload event when clicking the back button?
...e the problem. My javascript was set to execute after all of the libraries etc. were loaded. I checked these with the readyStateChange event.
After some testing I found out that the readyState of an element in a page where back has been clicked is not 'loaded' but 'complete'. Adding || element.read...