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Difference between save and saveAndFlush in Spring data jpa
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On saveAndFlush, changes will be flushed to DB immediately in this command. With save, this is not necessarily true, and might stay just in memory, until flush or commit commands are issued.
But be aware, that even if you flush th...
Removing multiple keys from a dictionary safely
... it might be more efficient to use for key in set(the_dict) & entries: and bypass the key in dict test.
– DylanYoung
Apr 15 at 15:30
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Difference between sh and bash
When writing shell programs, we often use /bin/sh and /bin/bash . I usually use bash , but I don't know what's the difference between them.
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Pros and cons of AppSettings vs applicationSettings (.NET app.config / Web.config)
...r to deal with - just slap in a <add key="...." value="..." /> entry and you're done.
The downside is: there's no type-checking, e.g. you cannot safely assume your number that you wanted to configure there really is a number - someone could put a string into that setting..... you just access ...
Link to reload current page
...ve been using:
<a href=".">link</a>
Have yet to find a case and/or browser where it does not work as intended.
Period means the current path. You can also use .. to refer to the folder above the current path, for instance, if you have this file structure:
page1.html
folder1
page...
proper way to sudo over ssh
...ch file;" EDIT Apparently it's important that you actually provide the command as a parameter, not through standard in (which makes sense in hindsight).
– Limited Atonement
Aug 10 '15 at 15:10
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Using WebAPI or MVC to return JSON in ASP.NET
...g an ASP.NET MVC application that is client-script heavy, it will use JSON and jQuery to manipulate the DOM.
6 Answers
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Why are my basic Heroku apps taking two seconds to load?
... gets unloaded (from the server memory).
On the first hit it gets loaded and stays loaded until some time passes without anyone accessing it.
This is done to save server resources. If no one uses your app why keep resources busy and not let someone who really needs use them ?
If your app has a ...
Get Android .apk file VersionName or VersionCode WITHOUT installing apk
...t programmatically get the version code or version name of my apk from the AndroidManifest.xml file after downloading it and without installing it.
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android splash screen sizes for ldpi,mdpi, hdpi, xhdpi displays ? - eg : 1024X768 pixels for ldpi
I have to design splash screens(images that fit screen while loading) for android application using phonegap. I have to design 4 size images that fit for 4types of screens like ldpi, mdpi , hdpi, xhdpi . Can anyone tell me exact sizes in pixels for these screens so I can design in that size ?
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