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Can't launch my app in Instruments: At least one target failed to launch

... Edit the scheme for your target and under "Profile [App Name]" set the Build Configuration to Debug (it's usually Release by default). share | improve this...
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How to convert boost path type to string?

...ello I currently have a program that gets a full path of a file's location and is put into a variable that is the type of: boost::filesystem2::path ...
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git: Switch branch and ignore any changes without committing

I was working on a git branch and was ready to commit my changes, so I made a commit with a useful commit message. I then absentmindedly made minor changes to the code that are not worth keeping. I now want to change branches, but git gives me, ...
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Difference between @Before, @BeforeClass, @BeforeEach and @BeforeAll

...nstance of your test fixture is created. In JUnit 5, the tags @BeforeEach and @BeforeAll are the equivalents of @Before and @BeforeClass in JUnit 4. Their names are a bit more indicative of when they run, loosely interpreted: 'before each tests' and 'once before all tests'. ...
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maxlength ignored for input type=“number” in Chrome

...type="number"> by design. Depending on your needs, you can use the min and max attributes as inon suggested in his/her answer (NB: this will only define a constrained range, not the actual character length of the value, though -9999 to 9999 will cover all 0-4 digit numbers), or you can use a reg...
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Checking if a folder exists (and creating folders) in Qt, C++

... Why it isn't static? QDir::exists("absolutepath") and QDir::mkdir(""absolutepath") – yalov Jun 19 '17 at 17:20 ...
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Responsively change div size keeping aspect ratio [duplicate]

...e same effect with another element, is it possible at all to tie the width and the height together using percentage? 5 Answ...
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How can I get column names from a table in SQL Server?

... You can obtain this information and much, much more by querying the Information Schema views. This sample query: SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = N'Customers' Can be made over all these DB objects: CHECK_CONSTRAINTS COL...
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“There was an error while performing this operation”

...e in IIS for which I cannot open any of the settings like Authentication, Handler Mappings, Authorization Rules etc. It just shows the error message "There was an error while performing this operation", with no more details and points to web.config. ...
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Adding placeholder text to textbox

...; myTxtbx.Text = "Enter text here..."; myTxtbx.GotFocus += GotFocus.EventHandle(RemoveText); myTxtbx.LostFocus += LostFocus.EventHandle(AddText); public void RemoveText(object sender, EventArgs e) { if (myTxtbx.Text == "Enter text here...") { myTxtbx.Text = ""; } } public void A...